English

trialate

From tri- + alate.

Formed from tri- + alate

Proto-Indo-European *tri- ‘three, threefold’

Proto-Italic *tri- ‘three, tri-’

English tri-

Proto-Indo-European *h₂eḱs- ‘axis’

…

Latin axis ‘an axletree of wagon, car, chariot’

Latin *axla

Latin āla ‘wing’

Latin ālātus ‘having wings, winged’

English alate

Today it means

adj Having three wings or wing-like structures.

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

Etymograph / trialate