| arcsec | (noun) the inverse function of the secant; the angle that has a secant equal to a given number | Synonyms: arc secant, arcsecant, inverse secant |
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| cosec | (noun) ratio of the hypotenuse to the opposite side of a right-angled triangle | Synonyms: cosecant |
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| msec | (noun) one thousandth (10^-3) of a second | Synonyms: millisecond |
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| parsec | (noun) a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years | Synonyms: secpar |
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| sec | (adjective) (of champagne) moderately dry | Synonyms: unsweet |
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| (noun) ratio of the hypotenuse to the adjacent side of a right-angled triangle | Synonyms: secant |
| (noun) 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites | Synonyms: s, second |