PLACOID


Meaning of PLACOID in English

[ 'plakɔɪd ]

■ adjective Zoology (of fish scales) tooth-like, being made of dentine with enamel, as in sharks and rays. Compare with ctenoid and ganoid .

Origin

C19: from Gk plax , plak- 'flat plate' + -oid .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.