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Quizzes > English & Grammar

Uni Definition Quiz: Check Your Prefix Skills

Quick quiz to check the uni prefix meaning. Instant results.

Editorial: Review CompletedCreated By: Jada NelsonUpdated Aug 28, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
paper art letters uni and word fragments on coral background quiz about prefix uni definitions

This quiz helps you check the uni prefix meaning and see how it shapes words like unique and unison. Get instant results and strengthen your vocabulary, then keep learning with our prefix quiz, explore unison definition quiz, or review pre and post prefixes.

Which prefix meaning "one" is found at the beginning of "unicorn"?
uni-
tri-
mono-
bi-
The prefix "uni-" comes from the Latin "unus" meaning "one" and appears in words like "unicorn," which literally means "one horn." It is a common prefix indicating singularity. Words such as "unicycle" and "unique" also use this prefix. For more information, see .
What does "unicycle" literally mean?
Three wheels
Two wheels
One wheel
Single seat
The word "unicycle" is formed from the prefix "uni-" meaning "one" and "-cycle" meaning "wheel." Therefore, a unicycle is a vehicle with a single wheel. This construction is common in English compound words. More details at .
What is the best definition of "unique"?
United
Interesting
One of a kind
Equal
The word "unique" combines "uni-" (one) with the suffix "-que" to mean "one of a kind" or "sole essence." It describes something without a match or equivalent. This usage has been standard in English since the 17th century. See for more information.
Which word means "a person or thing that unites"?
Universe
Unit
Unique
Unifier
The term "unifier" is formed from "uni-" (one) and the agent suffix "-fier," meaning "one who makes or causes to be." Hence, a unifier is someone or something that brings separate elements into one. The prefix indicates the act of making one. More at .
What does "unilateral" mean?
First
One-sided
Combined
Two-sided
The word "unilateral" comes from "uni-" meaning "one" and "-lateral" meaning "side." Thus, it describes action or decision affecting only one side. It is frequently used in diplomatic and legal contexts. See .
Which of these words does NOT use the prefix "uni-" meaning "one"?
Unidirectional
Ambiguous
Unison
Uniform
The word "ambiguous" comes from Latin "ambiguus" and has no relation to "uni-" meaning "one." Other options like "uniform," "unidirectional," and "unison" all use "uni-" to denote singularity. Understanding roots helps differentiate similar-looking terms. For more, see .
What does "union" literally mean?
Act of making one
Two
Many
Different
The noun "union" derives from Latin "unio," meaning "a making one." It indicates the state of being joined or united. This reflects the prefix "uni-" (one) combined with a nominal suffix. See for details.
The term "in unison" means:
Once
With one person
Separately
Simultaneously
The phrase "in unison" comes from Latin "unisonus," meaning "of one sound." It refers to actions or sounds occurring at the same time. The prefix underscores singular harmony. For further reading, see .
What is the meaning of "universal"?
Unique
Relating to all
Solitary
Single
The adjective "universal" combines "uni-" (one) with Latin "versus" (turned) but evolved to mean "applicable to all." It indicates something that is common or widespread. Medical and scientific contexts often use this term. See .
What does the suffix "-ity" in "university" indicate?
Quality or state
Location
Teacher
Group of people
In English, the suffix "-ity" turns adjectives or nouns into abstract nouns indicating a state or quality. In "university," it denotes the state or condition of being one whole institution. The term stems from Latin "universitas." For more, see .
Which word means "to cause to become one"?
Unique
Unify
Union
Unicycle
The verb "unify" uses the prefix "uni-" (one) plus "-fy" (make), meaning to make one or bring together into a single unit. It is common in political and technical contexts. See .
"Uniform" can refer to:
Unique item
A single design used by all
Mutual agreement
One person
The adjective "uniform" combines "uni-" (one) with Latin "forma" (shape or form), meaning "of one form." It denotes consistency or homogeneity across all elements. Uniforms in schools or military illustrate this. More at .
Which of these prefixes means the same as "uni-"?
tri-
mono-
bi-
poly-
The Greek-derived prefix "mono-" means "one," matching the Latin "uni-". Both are used to denote singularity but appear in different loanwords. For example, "monologue" and "unicycle" reflect different roots but similar meanings. See .
The term "unicellular" describes what?
Having one cell
Cell growth
Having many cells
Cell division
In biology, "unicellular" comes from "uni-" (one) and "cellular" (cells), meaning an organism consisting of a single cell. This contrasts with multicellular life forms. Many microorganisms are unicellular. See .
Which word refers to a group working as one?
Universe
Union
Unique
Unicorn
A "union" represents the state of being joined into one, often used for labor groups or political entities. It directly uses "uni-" to convey unity. Historical and modern examples include the European Union. For more, see .
"Unilateral" is to one side as "bilateral" is to:
Multiple sides
One side
Same side
Two sides
The prefix "bi-" means "two," so "bilateral" refers to both sides of something. By contrast, "unilateral" (uni- + lateral) refers to only one side. These terms are common in anatomy, diplomacy, and law. See .
What does "univalent" relate to?
Having two values
Having one valence or value
Having many values
No value
In chemistry and genetics, "univalent" denotes an element or gene with a valence of one or single pairing. The prefix "uni-" indicates singularity, and "-valent" relates to valence. It contrasts with "bivalent" or "multivalent." More at .
What is the meaning of "univocal"?
Unique
Multiple meanings
Silent
Having one voice or meaning
The term "univocal" merges "uni-" (one) with Latin "vox" (voice), meaning having a single voice or interpretation. It is often used in logic or rhetoric to describe clarity of meaning. See .
Which term describes a government with a single legislative body?
Bicameral
Monocameral
Tricameral
Unicameral
A "unicameral" legislature has one chamber, from "uni-" (one) and Latin "camera" (chamber). Many countries and states have unicameral systems for streamlined lawmaking. Contrast with "bicameral," which has two chambers. See .
The biological term "unisexual" means:
Having one sex
Having both sexes
Many sexes
No sex
In biology, "unisexual" refers to organisms or structures of a single sex, combining "uni-" (one) with "sexual." It applies to plants and animals that only produce one type of gamete. For more, see .
What is a "unifoliate" leaf?
A leaf with one leaflet
A leaf with many leaflets
A root structure
A flower type
The adjective "unifoliate" combines "uni-" (one) with Latin "folium" (leaf), meaning a leaf composed of a single leaflet. It distinguishes simple leaves from compound leaves with multiple leaflets. See .
In mathematics, a "unilateral series" refers to:
A series infinite on both ends
A finite series
A universal series
A series bounded on one side
In mathematical analysis, a "unilateral series" is one that has terms extending only in one direction (e.g., nonnegative indices). The prefix "uni-" (one) and "lateral" (side) underscore the one-sided nature. Contrast with bilateral series. See .
Which word means "speaking a single language"?
Unilingual
Multilingual
Bilingual
Polyglot
The adjective "unilingual" is formed from "uni-" (one) and "lingual" (language), meaning speaking or using only one language. It contrasts with "bilingual" and "multilingual." See .
The adjective "uniaxial" denotes:
Opposite axes
Relating to one axis
Relating to many axes
No axis
In physics and engineering, "uniaxial" means having or involving one axis. The prefix "uni-" (one) combines with "axial" (axis). It is used in describing stress, crystals, and more. For details, see .
In classical mechanics, what does a "uniphasic" process refer to?
A process with two phases
A process with equal phases
A process with multiple phases
A process involving a single phase
In thermodynamics and classical mechanics, a "uniphasic" process involves a single phase of matter (solid, liquid, or gas) throughout. The prefix "uni-" (one) and "phasic" (phase) indicate this. It is contrasted with multiphasic processes. Further reading at .
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Study Outcomes

  1. Define the prefix uni -

    Explain the definition of the prefix uni and its numerical significance in word formation.

  2. Identify words with the prefix uni -

    Recognize and list common vocabulary that begins with uni to reinforce your understanding of its usage.

  3. Differentiate numeric prefixes -

    Compare and contrast uni, bi, and tri to clarify how each prefix alters word meanings.

  4. Analyze word structures -

    Break down words to see how the prefix uni interacts with root words to create specific meanings.

  5. Apply prefix knowledge -

    Use the prefix uni to construct new words accurately and verify their appropriateness in context.

  6. Evaluate quiz performance -

    Assess your quiz results to pinpoint strengths and identify areas for further vocabulary development.

Cheat Sheet

  1. Definition of the Prefix Uni -

    The prefix uni- comes from Latin "unus," meaning "one," and establishes a singular sense in words like unicycle (one wheel) and unilateral (one side). This core definition of prefix uni helps you recognize how "uni" shapes meaning in English vocabulary (Merriam-Webster).

  2. Contrasting Uni- with Bi- and Tri- -

    To grasp prefix uni meaning, compare it to bi- ("two") and tri- ("three") in words such as bicycle vs. tricycle vs. unicycle. A simple mnemonic is "count the wheels" - uni = 1, bi = 2, tri = 3 - reinforcing how prefixes with uni and others alter word sense (Oxford English Dictionary).

  3. Scientific & Musical Applications -

    In scientific contexts, uni- appears in unicellular (single-celled) and universe (all turned into one), while in music, unison means "one sound." Recognizing these patterns demonstrates how the prefix uni influences diverse fields (Encyclopedia Britannica).

  4. Hyphenation & Word Formation Rules -

    When forming words starting with the prefix uni, style guides differ on hyphenation - some recommend uni-armed, others unarmed - so always check authoritative sources like the Chicago Manual of Style or Merriam-Webster. Understanding these morphological rules ensures correct usage and spelling.

  5. Common Words & Pitfalls -

    Reinforce your skills by reviewing words starting with the prefix uni - unicorn, unique, universal, unify, and unitary - and noting how each uses the one-unit concept. Beware of "false friends" like unity, which is a noun denoting "state of being one" rather than a prefix-plus-root construction (American Heritage Dictionary).

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