sine(n = noun.linkdef) sin - ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right-angled triangle; Array
is a kind of circular function, trigonometric function
The length of a perpendicular drawn from one extremity of an arc of a circle to the diameter drawn through the other extremity. [1913 Webster]
Without. [1913 Webster]
sine, n. Math.
1 the trigonometric function that is equal to the ratio of the side opposite a given angle (in a right-angled triangle) to the hypotenuse.
2 a function of the line drawn from one end of an arc perpendicularly to the radius through the other.
Idiom:
sine curve (or wave) a curve representing periodic oscillations of constant amplitude as given by a sine function: also called SINUSOID.
Etymology:
L sinus curve, fold of a toga, used in med.L as transl. of Arab. jayb bosom, sine
arc sine, coversed sine, inverse sine, latino sine flexione, sine curve, sine die, sine qua non, sine wave