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 (sī′nə-soid′, -nyə-)
1. Mathematics See sine curve.
2. Anatomy Any of the venous cavities through which blood passes in various glands and organs, such as the adrenal gland and the liver.

[Medieval Latin sinus, sine; see sine + -oid.]

si′nu·soi′dal (-soid′l) adj.
si′nu·soi′dal·ly adv.


1. (Mathematics) maths of or relating to a sine curve
2. (General Physics) physics having a magnitude that varies as a sine curve
ˌsinusˈoidally adv
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.sinusoidal - having a succession of waves or curves
curved, curving - having or marked by a curve or smoothly rounded bend; "the curved tusks of a walrus"; "his curved lips suggested a smile but his eyes were hard"


[ˌsaɪnəˈsɔɪdl] adjsinusoidale
References in periodicals archive ?
The sinusoidal waveform contained 144 graphical elements: 18 levels of luminance contrast approximating a sinusoid function that repeated 8 times.
Proliferation of sinusoidal cells and sinusoidal dilatation leads to atypical hyperplasia, whereas direct stimulation of hepatocytes with VCM leads to the proliferation of hepatocytes and formation of regeneratory nodules (10-12).
Production-sized machines have a sinusoidal shaft design that, when combined with proprietary screw-element is said to significantly increase torque ratings.
During tracking, the target is always within the antenna's main beam, but there is a sinusoidal variation in received power if the target is not centered in the cone.
In a 15-foot-high video projection of waves crashing against the coastline of the artist's native Corsica, Leccia shifts the image 90 degrees so that the surf moves up and down rather than sideways, the slow-pulsing sinusoidal curves suggesting animated Morris Louis veils.
Each tone used in Deutsch's experimentsis constructed from a set of sinusoidal waves that makes it easy to identify whether a tone is, for example, the musical note C but not whether it happens to be a high ro low C.
NASDAQ: MCHP), a leading provider of microcontroller, analog and Flash-IP solutions, today expanded its sinusoidal, sensorless, 3-phase BLDC fan motor driver portfolio with the MTD6505--the industry's first and only standalone, resistor-programmable driver that enables the selection of multiple back-EMF coefficient ranges.
87% of cases show centrilobular necrosis, sinusoidal dilatation found in 22.
Contract award: Delivery sinusoidal signal generators WEiTI / 37 / S / ZP / 2014/1030.
A result that the scientists themselves had not expected also opens up new research perspectives: In addition to the multipotent stromal cells, sinusoidal endothelial cells in the bone marrow are another cell type that appears to have increased CD73 activity.
In his basic example, he examines the frequency content of a synthetic line voltage that is created by summing the sinusoidal signals and a noise component.
Can researchers find an appropriate depth, width, and spacing of the sinusoidal pattern--dubbed the "mumble strip"--that will provide enough noise and vibration inside the vehicle to alert drivers that they are drifting from their lane?