Definitions for: Sinusoid

[n] tiny endothelium-lined passages for blood in the tissue of an organ
[n] the curve of y=sin x

Webster (1913) Definition: Si"nus*oid, n. [Sinus + -oid.] (Geom.)
The curve whose ordinates are proportional to the sines of
the abscissas, the equation of the curve being y = a sin x.
It is also called the curve of sines.

Synonyms: sine curve

See Also: passage, passageway, undulation, wave