Lias
Pronunciation
- UK IPA: /ˈlaɪəs/
Origin
Originally dialectal, from Old French liois ("compact limestone") (French liais).
Full definition of lias
Noun
lias
(uncountable)- A type of blue limestone present in parts of southern England.
- (geology) A stratigraphic group from the lower Jurassic period, consisting of thin layers of blue limestone.