L. " + G. -oeides = like; a tiny vessel with a tortuous path and many connections to similar vessels, e.g., hepatic sinusoids, bone marrow sinusoids.

microscopic space or passage for blood in certain organs, such as the liver or spleen

tiny endothelium-lined passages for blood in the tissue of an organ

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.

See: Pure Tone.