Dictionary.com

sinusoid

[ sahy-nuh-soid ]
/ ˈsaɪ nəˌsɔɪd /
Save This Word!

noun Mathematics.
a curve described by the equation y = a sin x, the ordinate being proportional to the sine of the abscissa.
QUIZ
SPRINT TO THE FINISH WITH THIS OLYMPICS QUIZ!
Compete in our Olympics quiz to see if you can take home the gold medal in Olympics knowledge.
Question 1 of 10
Where was the Olympics first held?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of sinusoid

First recorded in 1815–25; sinus + -oid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for sinusoid

sinusoid
/ (ˈsaɪnəˌsɔɪd) /

noun
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
adjective
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

Medical definitions for sinusoid

sinusoid
[ sīnə-soid′, -nyə- ]

n.
Any of the venous cavities through which blood passes in various glands and organs, such as the adrenal gland and the liver.
adj.
Resembling a sinus.

Other words from sinusoid

si′nu•soidal (-soidl) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK