si|ne

sine¹ «syn», noun.

1. the length of the side opposite an acute angle in a right triangle divided by the length of the hypotenuse. The sine, secant, and tangent are the three fundamental trigonometric functions. Abbr: sin (no period).

2. (originally) a perpendicular drawn from one extremity of an arc of a circle to the diameter which intersects its other extremity.

╂[< Latin sinus, -ūs bend; fold in a garment, bosom (in Medieval Latin, a translation of Arabic jaib sine; (originally) bosom of a garment)]

si|ne² «SY nee», preposition.

Latin. without.