LEWISIAN


Meaning of LEWISIAN in English

[ lu:'ɪsɪən ]

■ adjective Geology of or denoting the earlier stage of the Proterozoic aeon in NW Scotland, when the oldest rocks in Britain were deposited.

Origin

C19: from the island of Lewis in the Outer Hebrides (where the chief outcrops of these rocks are found) + -ian .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.