- a curve described by the equation y = a sin x, the ordinate being proportional to the sine of the abscissa.
Origin of sinusoid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any of the irregular terminal blood vessels that replace capillaries in certain organs, such as the liver, heart, spleen, and pancreas
- another name for sine curve
- resembling a sinus
Word Origin for sinusoid
C19: from French sinusoïde. See sinus, -oid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for sinusoid
Online Etymology Dictionary, © 2010 Douglas Harper
- Any of the venous cavities through which blood passes in various glands and organs, such as the adrenal gland and the liver.
- Resembling a sinus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.