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1. (n.) sine
a fundamental trigonometric function that, in a right triangle, is expressed as the ratio of the length of the side opposite an acute angle to the length of the hypotenuse.
Etymology: (1585–95; < NL, L sinus curve, fold, pocket, trans. of Ar jayb lit., pocket)
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| Definition of 'sine' |
Princeton's WordNet |
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1. (noun) sine, sin
ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right-angled triangle
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| Definition of 'sine' |
Webster Dictionary |
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1. (noun) sine
the length of a perpendicular drawn from one extremity of an arc of a circle to the diameter drawn through the other extremity
2. (noun) sine
the perpendicular itself. See Sine of angle, below
3. sine
without
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Definitions of sine 
