Unit

/ˈjuː.nɪt/ adj, noun, slang

adj, noun, slang ·Very common ·Middle school level

Meaning at a glance

  • Primary sense: Oneness, singularity, seen as a component of a whole number; a magnitude of one.
  • Grammar: unit is listed as adj, noun, slang.
  • Nearest alternatives: a single, abampere, abcoulomb, abfarad.
  • Useful contrasts: duple, multi, thousandth part.
  • Usage evidence: The company plans to close its U.S. sales unit in New York.

How to use "unit"

  1. Start with the primary definition, then check the part of speech before placing the word in a sentence.
  2. Compare nearby synonyms to make sure "unit" carries the exact meaning, tone, and strength you need.
  3. Use the example sentence as a context check. If your sentence uses the word differently, confirm that the grammar still fits.

Meaning check

  • Does the word fit the sentence's grammar?
  • Does it match the intended tone rather than only the dictionary definition?
  • Would a simpler synonym be clearer for the reader?
  • Is there enough surrounding context to prevent ambiguity?

Source and review context

This entry combines structured lexical data with WordToolSet review checks. Definitions, examples, synonyms, and usage notes may come from different source tables, so the page is designed to show evidence from more than one angle before you rely on "unit" in a final draft.

If a word has several senses, prefer the sense that matches your sentence's grammar and surrounding context. A correct definition can still be the wrong choice when the sentence needs a different register, emphasis, or level of specificity.

Before you rely on this definition

Read the first definition as a starting point, then check the example, synonyms, and part of speech before treating "unit" as the right word for your sentence.

If your draft is formal, technical, persuasive, or sensitive, compare "unit" with a nearby alternative so the final choice matches both meaning and reader expectation.

Compare nearby meanings

  • Use synonyms when you need a softer, stronger, simpler, or more specific word.
  • Use antonyms to check the boundary of the meaning and avoid accidental contrast.
  • Use the example sentence to confirm the word behaves naturally in context.
  • Keep the original wording when a replacement adds complexity without improving precision.

Definition decision workflow

1. Identify the role

Check whether "unit" is acting as adj, noun, slang in your sentence. A definition is only useful when the grammar matches the way the word is being used.

2. Test the nearest option

Compare it with "a single" and other nearby choices to see whether the sentence needs a softer, stronger, or more familiar word.

3. Confirm with context

Use the example sentence below as an evidence check, then read your own sentence out loud to catch tone or rhythm problems.

Review note: Definition pages are checked for source coverage, sentence evidence, synonym support, and editorial insight before they are treated as approval-ready pages. If the evidence is too thin, the page remains available to users but is kept out of the approval-facing indexed inventory.

Final meaning check

Before publishing a sentence with "unit", ask whether the word helps the reader understand the idea faster. A precise word should reduce confusion, not simply make the sentence look more polished.

When the definition, synonym evidence, and example context point in the same direction, the word is usually a safer choice. When they conflict, revise the sentence or choose a clearer alternative.

Definitions

Noun
  1. 1
    Oneness, singularity, seen as a component of a whole number; a magnitude of one.

    "Number, we define, to be, a certayne Mathematicall Sũme, of Vnits. [Note the worde, Vnit, to expresse the Greke Monas, & not Vnitie: as we haue all, commonly, till now, vsed.]"

  2. 2
    an assemblage of parts that is regarded as a single entity wordnet
  3. 3
    A standard measure of a quantity or magnitude.

    "The centimetre is a unit of length."

  4. 4
    a single undivided whole wordnet
  5. 5
    The number one.
Show 27 more definitions
  1. 6
    an organization regarded as part of a larger social group wordnet
  2. 7
    Ellipsis of international unit. abbreviation, alt-of, ellipsis

    "This pill provides 500 units of Vitamin E."

  3. 8
    a single undivided natural thing occurring in the composition of something else wordnet
  4. 9
    An organized group comprising people and/or equipment.

    "He was a member of a special police unit."

  5. 10
    any division of quantity accepted as a standard of measurement or exchange wordnet
  6. 11
    A course, lesson, or section of a curriculum covering a particular topic or skill.

    "We're starting a new unit on photosynthesis next week."

  7. 12
    an individual or group or structure or other entity regarded as a structural or functional constituent of a whole wordnet
  8. 13
    A member of a military organization. informal

    "The fifth tank brigade moved in with 20 units. (i.e., 20 tanks)"

  9. 14
    An item which may be sold singly.

    "We shipped nearly twice as many units this month as last month."

  10. 15
    Any piece of equipment, such as an appliance, power tool, stereo system, computer, tractor, or machinery. Australia, New-Zealand, UK, US

    "This air-conditioner is the most efficient unit we sell."

  11. 16
    A structure used to display goods for sale (usually containing shelves, pegs or hooks)
  12. 17
    A measure of housing equivalent to the living quarters of one household; an apartment where a group of apartments is contained in one or more multi-storied buildings or a group of dwellings is in one or more single storey buildings, usually arranged around a driveway. Australia, New-Zealand, US

    "The new apartment complex will have 50 units."

  13. 18
    A quantity of approximately 517 milliliters (1.1 U.S. pints) of blood.
  14. 19
    Any military element whose structure is prescribed by competent authority, such as a table of organization and equipment; specifically, part of an organization. US
  15. 20
    An organization title of a subdivision of a group in a task force. US
  16. 21
    A standard or basic quantity into which an item of supply is divided, issued, or detailed. In this meaning, also called unit of issue. US
  17. 22
    With regard to Reserve Components of the Armed Forces, denotes a Selected Reserve unit organized, equipped, and trained for mobilization to serve on active duty as a unit or to augment or be augmented by another unit. Headquarters and support functions without wartime missions are not considered units. US
  18. 23
    The identity element, neutral element.

    "An element 𝑒 of 𝑆 such that 𝑒𝑥 = 𝑥 = 𝑥𝑒 for all 𝑥 ∈ 𝑆 is called a unit element. (When the law of composition is written additively, the unit element is denoted by 0, and is called a zero element.)"

  19. 24
    An element having an inverse, an invertible element; an associate of the unity.

    "Let 𝐴 be an arbitrary integral domain. We say that an element 𝑎 ∈ 𝐴 is invertible or is a unit of 𝐴 if it has an inverse in 𝐴; in ℤ the units are ±1, […]"

  20. 25
    In an adjunction, a natural transformation from the identity functor of the domain of the left adjoint functor to the composition of the right adjoint functor with the left adjoint functor.
  21. 26
    A volume of rock or ice of identifiable origin and age range that is defined by the distinctive and dominant, easily mapped and recognizable petrographic, lithologic or paleontologic features (facies) that characterize it.

    "For example, the Moenkopi Formation was named for the small settlement of Moenkopi, Arizona where the formation was first defined as being a separate unit from the rocks above and beneath it."

  22. 27
    A unit of alcohol. UK
  23. 28
    One kilowatt-hour (as recorded on an electricity meter). UK
  24. 29
    A gold coin of the reign of James I, worth twenty shillings. historical
  25. 30
    A work unit.
  26. 31
    A physically large person. Australia, UK, slang

    "Luca's father, Americo Campanaro, said: "I feel like my heart has been ripped out." Mr Campanaro added: "He was a big lad, a big unit, that's why he was a goalkeeper, with a big heart to match. A gentle giant.""

  27. 32
    A penis, especially a large one. US, slang, vulgar
Adjective
  1. 1
    For each unit. not-comparable

    "We have to keep our unit costs down if we want to make a profit."

  2. 2
    Having a size or magnitude of one. not-comparable

    "Consider the following time sequence Z_t=A sin (ωt+θ), where A is a random variable with a zero mean and a unit variance and θ is a random variable with a uniform distribution on the interval [-π,π] independent of A."

Antonyms

duplemultithousandth partclass feature piece

Example

"The company plans to close its U.S. sales unit in New York."

Common questions

What does "unit" mean?

Oneness, singularity, seen as a component of a whole number; a magnitude of one.

What is a synonym for "unit"?

Common synonyms include: a single, abampere, abcoulomb, abfarad, abhenry, abohm.

How do you use "unit" in a sentence?

The company plans to close its U.S. sales unit in New York.

How do you pronounce "unit"?

Pronounced /ˈjuː.nɪt/.

Etymology

Formerly unite, a later form of unity; see unity.

More for "unit"