Definition of homocercal in English:

homocercal

Syllabification: ho·mo·cer·cal
Pronunciation: /ˌhōməˈsərkəl
 
/

adjective

Zoology
  • (Of a fish’s tail) appearing outwardly symmetrical but with the backbone passing into the upper lobe, as in all higher fish. Contrasted with diphycercal, heterocercal.
    More example sentences
    • The current literature contains several hypotheses about the function of caudal fins of different shapes, and much of this discussion has focused on the difference between heterocercal and homocercal tails.
    • Both mammals and reptiles returning to the sea developed quite workable homocercal tails in very short order.
    • This caudal fin structure contrasts with the externally symmetrical homocercal morphology present in most teleost fishes such as bluegill sunfish.

Origin

mid 19th century: from homo- 'same' + Greek kerkos 'tail' + -al.

More definitions of homocercal

Definition of homocercal in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day kerf
Pronunciation: kərf
noun
a slit made by cutting with a saw