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sinusoid

[ sahy-nuh-soid ]
/ ˈsaɪ nəˌsɔɪd /
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noun Mathematics.
a curve described by the equation y = a sin x, the ordinate being proportional to the sine of the abscissa.
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Origin of sinusoid

First recorded in 1815–25; sinus + -oid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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
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