Lias

//ˈliəs// name, noun

name, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A type of blue limestone present in parts of southern England and Wales. uncountable
  2. 2
    plural of LIA form-of, plural
  3. 3
    Alternative letter-case form of Lias. alt-of, uncountable
Proper Noun
  1. 1
    A stratigraphic group from the lower Jurassic of Western Europe, consisting of thin layers of blue limestone.
  2. 2
    The lower Jurassic. obsolete
  3. 3
    A surname.

Etymology

Etymology 1

Originally dialectal, from Old French liois (“compact limestone”) (French liais), from Medieval Latin liae (see lees).

Etymology 2

See lias.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.