| unary |
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adjective - Consisting of or involving a single element or component.
- (mathematics) (Of a function) which takes exactly one argument; whose domain has dimension 1.
- (programming) (Of a function, procedure, etc.) which takes exactly one input.
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| unconditional |
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adjective - absolute, and without conditions, limitations, reservations or qualifications
- We demand your surrender.
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| undecagon |
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noun (plural undecagons)
- (geometry) A polygon with eleven sides and eleven angles.
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| uneven |
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adjective
- Not even
- Not level or smooth
- Not uniform
- Varying in quality
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| uniform |
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noun
- A distinctive outfit as a means of identifying members of a group.
- Phonetic equivalent for the letter U in the ICAO spelling alphabet, informally known as the NATO phonetic alphabet.
adjective
- unvarying, Unvarying; all the same.
- consistent, Consistent; conforming to one standard.
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| unilateral |
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adjective
- done by one side only
- affecting only one side of the body
- binding or affecting one party only
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| unit circle |
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noun (plural unit circles)
- (geometry) A circle of radius 1.
- (trigonometry) (the unit circle) The circle of radius 1 with centre at the origin, used in defining trigonometric functions.
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| Universe |
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proper noun the Universe
- The sum of everything that exists in the cosmos, including time and space itself.
- Powerful telescopes look far back into the distant reaches of the visible universe.
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| unknown |
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noun
- In algebra, a variable (usually x, y or z) whose value is to be found.
- Any fact or place about which nothing is known. (as in the phrase "into the unknown")
adjective
- Not known; unidentified; not well known.
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