English
Liassic
From Lias + -ic.
Formed from Lias + -ic
Proto-Indo-European *legʰ- ‘to lie’
Medieval Latin liae
Old French liois ‘compact limestone’
English Lias
Today it means
adj Of or relating to the Lias or its fossils.
Language periods are conventional ranges, not dates for this word.
Etymograph / Liassic