Sine vs. Sinus — What's the Difference?

In mathematics, the sine is a trigonometric function of an angle. The sine of an acute angle is defined in the context of a right triangle: for the specified angle, it is the ratio of the length of the side that is opposite that angle, to the length of the longest side of the triangle (the hypotenuse).

A depression or cavity formed by a bending or curving.

The ordinate of the endpoint of an arc of a unit circle centered at the origin of a Cartesian coordinate system, the arc being of length x and measured counterclockwise from the point (1, 0) if x is positive or clockwise if x is negative.

A dilated channel or receptacle containing chiefly venous blood.

In a right triangle, the ratio of the length of the side opposite an acute angle to the length of the hypotenuse.

Any of various air-filled cavities in the bones of the skull, especially one communicating with the nostrils.

In a right triangle, the ratio of the length of the side opposite an angle to the length of the hypotenuse. Category:en:Trigonometric functions Category:en:Functions

(Medicine) A fistula leading from a pus-filled cavity.

The length of a perpendicular drawn from one extremity of an arc of a circle to the diameter drawn through the other extremity.

(Botany) A recess or indentation between two lobes or segments, as of a leaf.

Without.

A pouch or cavity in a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities the paranasal sinus.

Ratio of the opposite side to the hypotenuse of a right-angled triangle

(anatomy) An irregular venous or lymphatic cavity, reservoir, or dilated vessel.

Relating to or denoting the sinoatrial node of the heart or its function of regulating the heartbeat.

(pathology) An abnormal cavity or passage such as a fistula, leading from a deep-seated infection and discharging pus to the surface.

(botany) A rounded notch or depression between two lobes or teeth in the margin of a leaf or petal.

(geography) A bay of the sea; a recess in the shore.

(trigonometry) sine.

An opening; a hollow; a bending.

A bay of the sea; a recess in the shore.

A cavity; a depression.

A narrow, elongated cavity, in which pus is collected; an elongated abscess with only a small orifice.

A depression between adjoining lobes.

An abnormal passage leading from a suppurating cavity to the body surface

Any of various air-filled cavities especially in the bones of the skull

A wide channel containing blood; does not have the coating of an ordinary blood vessel