adj.
Pronunciation: ˌ s ī n-y ə - ' so ̇ i-d ə l, ˌ s ī -n ə -
Function: adjective
Date: 1878
: of, relating to, shaped like, or varying according to a sine curve or sine wave < sinusoidal motion> < sinusoidal alternating current> < sinusoidal grooves>
– si · nu · soi · dal · ly \ -d ə l- ē \ adverb