[ ˌdɪfɪ'sə:k(ə)l ]
■ adjective Zoology (of a fish's tail) approximately symmetrical and with the vertebral column continuing to the tip.
Origin
C19: from Gk diphu- 'of double form' + kerkos 'tail' + -al .
[ ˌdɪfɪ'sə:k(ə)l ]
■ adjective Zoology (of a fish's tail) approximately symmetrical and with the vertebral column continuing to the tip.
Origin
C19: from Gk diphu- 'of double form' + kerkos 'tail' + -al .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004