English

triangle wave

From triangle + wave, named for its triangular shape when graphed.

A compound of triangle + wave

Latin triangulus ‘three-cornered, having three angles’

Latin triangulum

Old French triangle

Middle English triangle

Proto-Indo-European *webʰ- ‘to weave, braid’

Proto-Germanic *wabōną

Proto-West Germanic *wabōn

Old English wafian ‘to wave’

Middle English waven ‘to shake’

English wave

Today it means

noun A function or waveform that alternately ramps linearly upwards and then downwards.

Language periods are conventional ranges, not dates for this word.

Etymograph / triangle wave