RUDIST


Meaning of RUDIST in English

[ 'ru:dɪst ]

■ noun a cone-shaped fossil bivalve mollusc which formed colonies resembling reefs in the Cretaceous period.

Origin

C19: from mod. L. Rudista (former group name), from L. rudis 'unwrought'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.