Etymograph

English

heptadecatriene

From heptadeca- + tri- + -ene.

Formed from heptadeca- + tri- + -ene

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

Proto-Italic *tri- ‘three, tri-’

English tri-

Today it means

noun Any aliphatic hydrocarbon that has seventeen carbon atoms and three double bonds

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

Etymograph / heptadecatriene