Scottish National Dictionary (1700–)
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First published 1976 (SND Vol. X, list of scientific terms with Scottish connections).
This entry has not been updated since then but may contain minor corrections and revisions.
MORARIAN, adj. Geol. Associated with a movement on the earth about 730 million years ago resulting in the formation of mountains (1969 R. S. Lambert in Proc. Geol. Soc. London CLXV. 244).
[From Morar in Inv. where it is exemplified.]