Triassic definition by Webster's New World
Origin: ; from German triassisch (; from Late Latin Trias (see triad: because divisible into three groups) plush -isch, -ic
Triassic definition by American Heritage Dictionary
Origin: Late Latin trias, triad (from the subdivision of this period into three parts); see triad + -ic.
triassic - Phrases/Idioms
triassic - Science Definition