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9th-grade-vocabulary-words

English Vocabulary · Grade 9 Live Review Preview

9th Grade Vocabulary Words

Ninth grade marks the transition to high-school reading and writing across literature, argument, research, biology, physical and Earth science, algebra, computing, world history, civics, and geography. This level develops precise academic and domain-specific vocabulary while strengthening context, nuance, source evaluation, figurative language, and evidence-based communication.

This independently authored 800-word beta curriculum is arranged in twenty-three pages of up to thirty-five words. Pages containing words 1–500 include five cloze questions drawn only from that enhanced range; words 501–800 remain fully visible and editable as list pages while the expanded practice layer is developed. Each row includes a subject-field label and an editable word-study note about a transparent affix, compound structure, capitalization, or dictionary base form. The cited Grade 9 resources calibrate difficulty and study skills only; all learner-facing definitions, examples, quizzes, and descriptions are original KSSR copy.

Please note: the vocabulary lists for grades 9~11 have been selected to ensure no overlap with the previous grade level. If the words are too specialized or difficult for you, please go back to grade levels 4~8 and review the words on those pages.

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800 words
Words 526–560 of 800
#WordDetailsMeaningSample sentence
526Pax Romanaproper noun
Study

Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: Pax + Romana. Study the complete expression as one field-specific unit.

a long period of relative stability within the Roman EmpireTrade expanded across imperial roads during the Pax Romana.
527civil lawnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: civil + law. Study the complete expression as one field-specific unit.

a legal tradition based on written codes and rules governing private rights and disputesRoman civil law influenced many later European legal systems.
528aqueductnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Base-form focus: aqueduct is the dictionary headword; compare its inflected or derived forms in context.

a constructed channel that carries water over a distanceThe aqueduct supplied the city from a mountain spring.
529feudal hierarchynoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: feudal + hierarchy. Study the complete expression as one field-specific unit.

a ranked medieval system of obligations linking rulers, nobles, vassals, and dependentsLandholding and loyalty shaped the feudal hierarchy.
530serfdomnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Base-form focus: serfdom is the dictionary headword; compare its inflected or derived forms in context.

a system binding agricultural laborers to an estate and its lordUnder serfdom, peasants owed labor and dues but were not normally sold apart from the land.
531printing pressnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: printing + press. Study the complete expression as one field-specific unit.

a machine that reproduces text or images from an inked surface, greatly increasing publication speedMovable type and the printing press lowered the cost of books in Europe.
532Protestant Reformationproper noun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: Protestant + Reformation. Study the complete expression as one field-specific unit.

the sixteenth-century movement that challenged Western Christian institutions and produced new churchesThe Protestant Reformation changed religious and political authority across Europe.
533Counter-Reformationproper noun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: Counter + Reformation. Study the complete expression as one field-specific unit.

Catholic reform and response to Protestant movements during the sixteenth and seventeenth centuriesThe Council of Trent shaped the Counter-Reformation.
534scientific revolutionnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: scientific + revolution. Study the complete expression as one field-specific unit.

the early modern transformation in methods and explanations for studying the natural worldThe scientific revolution emphasized mathematical models and repeatable observation.
535heliocentric modelnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: heliocentric + model. Study the complete expression as one field-specific unit.

a model placing the Sun near the center of the planetary systemThe heliocentric model explained retrograde motion more simply.
536geocentric modelnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: geocentric + model. Study the complete expression as one field-specific unit.

a model placing Earth at the center of the universe or planetary systemThe geocentric model dominated much European astronomy for centuries.
537natural lawnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: natural + law. Study the complete expression as one field-specific unit.

the idea that universal principles of reason or morality can guide human lawEnlightenment writers used natural law to criticize arbitrary rule.
538social contractnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: social + contract. Study the complete expression as one field-specific unit.

the theory that political authority arises from an agreement among people to form governmentThe social contract requires government to protect rights in exchange for civic obedience.
539consent of the governednoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: consent + of + the + governed. Study the complete expression as one field-specific unit.

the principle that legitimate political authority depends on the people's approvalRegular elections are one expression of consent of the governed.
540constitutionalismnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Suffix focus: -ism often names a belief, system, movement, or practice.

the principle that government power must be defined and limited by higher lawConstitutionalism rejects the idea that rulers may govern without legal restraint.
541Age of Explorationproper noun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: Age + of + Exploration. Study the complete expression as one field-specific unit.

the period of extensive European overseas travel and expansion beginning in the fifteenth centuryDuring the Age of Exploration, voyages connected distant regions through trade and conquest.
542circumnavigationnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Suffix focus: -ation commonly forms a noun naming an action, process, or result.

travel completely around Earth or another geographic featureThe expedition completed the first recorded circumnavigation of the globe.
543map projection analysisnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: map + projection + analysis. Study the complete expression as one field-specific unit.

evaluation of how a flat map represents and distorts Earth's curved surfaceMap projection analysis shows why Greenland appears unusually large on a Mercator map.
544navigationnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Suffix focus: -ation commonly forms a noun naming an action, process, or result.

the science and practice of determining position and planning travel routesImproved navigation helped sailors cross open oceans.
545imperial expansionnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: imperial + expansion. Study the complete expression as one field-specific unit.

the extension of a state's political, military, or economic control over other territoriesImperial expansion displaced local rulers and redirected trade.
546Atlantic slave tradeproper noun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: Atlantic + slave + trade. Study the complete expression as one field-specific unit.

the forced trafficking of millions of Africans across the Atlantic within a system of racial slaveryThe Atlantic slave trade caused immense suffering and reshaped societies on several continents.
547industrial revolutionnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: industrial + revolution. Study the complete expression as one field-specific unit.

the transformation toward mechanized production, factories, and new energy sourcesThe industrial revolution moved much textile production from homes to factories.
548factory systemnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: factory + system. Study the complete expression as one field-specific unit.

a production method that concentrates workers and machinery in one managed locationThe factory system divided manufacturing into repeated specialized tasks.
549mass productionnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: mass + production. Study the complete expression as one field-specific unit.

large-scale manufacture of standardized goods, often using assembly methodsMass production reduced the price of many household items.
550rapid urbanizationnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: rapid + urbanization. Study the complete expression as one field-specific unit.

fast growth in the share or number of people living in citiesRapid urbanization created crowded housing near nineteenth-century factories.
551labor movementnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: labor + movement. Study the complete expression as one field-specific unit.

organized efforts by workers to improve wages, hours, rights, and conditionsThe labor movement campaigned for safer factories and shorter workdays.
552collective bargainingnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: collective + bargaining. Study the complete expression as one field-specific unit.

negotiation between an employer and an organized group of workersThrough collective bargaining, the union and company agreed on wages.
553laissez-faireadjective
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: laissez + faire. Study the complete expression as one field-specific unit.

favoring minimal government interference in economic activityLaissez-faire thinkers argued that markets function best with limited regulation.
554class consciousnessnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: class + consciousness. Study the complete expression as one field-specific unit.

awareness of a social class's shared position and interestsFactory workers developed class consciousness through common working conditions.
555national sovereigntynoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: national + sovereignty. Study the complete expression as one field-specific unit.

a state's authority to govern itself and control its territoryThe treaty recognized the new country's national sovereignty.
556legitimacynoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Base-form focus: legitimacy is the dictionary headword; compare its inflected or derived forms in context.

accepted rightfulness of a ruler, institution, or political orderFree elections can strengthen a government's legitimacy.
557balance of powernoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: balance + of + power. Study the complete expression as one field-specific unit.

a distribution of strength intended to prevent any one state from dominating othersDiplomats formed alliances to maintain a balance of power.
558alliance systemnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: alliance + system. Study the complete expression as one field-specific unit.

a network of agreements in which states promise cooperation or defenseThe alliance system turned a regional crisis into a wider war.
559diplomatic negotiationnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Term structure: diplomatic + negotiation. Study the complete expression as one field-specific unit.

formal discussion between states or representatives seeking agreementDiplomatic negotiation produced a temporary border settlement.
560militarizationnoun
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Field: Grade 9 world-history, civics, and geography term

Word study: Suffix focus: -ization forms a noun for a process of making or becoming.

the process of expanding military influence, preparation, or equipmentMilitarization increased spending on armies and weapons before the conflict.

Vocabulary reading and practice

From Rome to Feudal Europe

Reading practice for pages 16–18. Five relevant words are highlighted.

English reading

During the Pax Romana, imperial roads and each major aqueduct connected distant communities, while Roman civil law influenced later legal traditions. Centuries afterward, political power in parts of Europe became organized through a feudal hierarchy. Under serfdom, many agricultural workers were bound by obligations to landowners rather than protected as equal citizens.

Reading comprehension

1. What connected Roman communities?

Roads and aqueducts connected Roman communities.

2. What Roman tradition influenced later law?

Roman civil law influenced later legal traditions.

3. How did serfdom restrict workers?

It bound many workers to landowners through obligations.

Sources and curriculum references

These references guide selection and calibration. Definitions, sample sentences, readings, questions, and teaching notes are independently written and reviewed.