Sinus

A sinus is a pouch or cavity in any organ or tissue, or an abnormal cavity or passage caused by the destruction of tissue. The term is applied to a large number and variety of structures in the human body, such as:-

See also

• Sinus is a Latin name for the trigonometric function sine, a concept of mathematics. (See trigonometry.)
• Sinus curves can measure the stability of an electric current, identifying power spikes. Oscilloscopes use sinus curves to display measured voltage.