| arccosecant | (noun) the angle that has a cosecant equal to a given number | Synonyms: arc cosecant, inverse cosecant |
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| arcsecant | (noun) the inverse function of the secant; the angle that has a secant equal to a given number | Synonyms: arc secant, arcsec, inverse secant |
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| cosecant | (noun) ratio of the hypotenuse to the opposite side of a right-angled triangle | Synonyms: cosec |
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| decantation | (noun) the act of gently pouring off a clear liquor (as from its original bottle) without disturbing the lees | - |
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| decanter | (noun) a bottle with a stopper; for serving wine or water | Synonyms: carafe |
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| lecanopteris | (noun) any of several bizarre ferns of the genus Lecanopteris having swollen hollow rhizomes that provide homes for symbiotic ants | - |
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| lecanora | (noun) any lichen of the genus Lecanora; some used in dyeing; some used for food | - |
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| pecan | (noun) smooth brown oval nut of south central United States | - |
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| (noun) tree of southern United States and Mexico cultivated for its nuts | Synonyms: Carya illinoensis, Carya illinoinsis, pecan tree |
| (noun) wood of a pecan tree | - |
| recantation | (noun) a disavowal or taking back of a previous assertion | Synonyms: abjuration, retraction |
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| secant | (noun) ratio of the hypotenuse to the adjacent side of a right-angled triangle | Synonyms: sec |
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| (noun) a straight line that intersects a curve at two or more points | - |