PROTOSTOME


Meaning of PROTOSTOME in English

[ 'prəʊtə(ʊ)stəʊm ]

■ noun Zoology an organism whose mouth develops from a primary embryonic opening, such as an annelid, mollusc, or arthropod. Compare with deuterostome .

Origin

1950s: from proto- + Gk stoma 'mouth'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.