Definition of cyclostome in English:

Share this entry


Pronunciation: /ˈsīkləˌstōm/


An eellike, jawless vertebrate with a round sucking mouth, formerly included in a group with the lampreys and hagfishes.
Example sentences
  • Data concerning key evolutionary invertebrate and vertebrate groups, the protochordates, chondrichthyes and cyclostomes, are essential to establish evolutionary patterns of the peptides.
  • The skeleton of cyclostomes furnishes far fewer taxonomic characters than that of the more complex cheilostomes.
  • This extant species has erect jointed colonies, an articulated growth-form which seemingly evolved convergently with that of crisiid cyclostomes.


Mid 19th century: from cyclo- + Greek stoma 'mouth'.

For editors and proofreaders

Syllabification: cy·clo·stome

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.