Definition of trochophore in English:

trochophore

Syllabification: troch·o·phore
Pronunciation: /ˈträkəˌfôr
 
/

noun

Zoology
The planktonic larva of certain invertebrates, including some mollusks and polychaete worms, having a roughly spherical body, a band of cilia, and a spinning motion.
More example sentences
  • Polychaetes usually have separate sexes; many polychaetes hatch into a particular type of planktonic larva, the trochophore, which later metamorphoses into a juvenile annelid.
  • One widely-mooted suggestion is that planktotrophic larvae, typified by the annelidan trochophore and echinoid pluteus, existed long before the metazoan radiations evident in the Cambrian fossil record.
  • The larva is a typical trochophore with apical organ, prototroch and metatroch of compound cilia, adoral ciliary zone and gastrotroch of separate cilia, and a pair of protonephridia; only the telotroch is missing.

Origin

late 19th century: from Greek trokhos 'wheel' + -phore.

Definition of trochophore in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day hypnopompic
Pronunciation: ˌhipnəˈpämpik
adjective
relating to the state immediately preceding waking up...