Definition of polypoid in English:


Pronunciation /ˈpäləˌpoid/ /ˈpɑləˌpɔɪd/


  • 1Zoology
    Relating to or resembling a polyp or hydra.

    ‘a polypoid colonial form’
    • ‘These attributes are obliterated when it undergoes metamorphosis into a sessile polypoid adult.’
    • ‘In its microstructure and gross anatomy, Hyolithelius is most similar to Byronia and to thecae of polypoid coronalids.’
    • ‘Byronia is most similar to thecae of polypoid coronalids, an extant group of scyphozoans that have been allied with conulariids.’
    • ‘For the reasons outlined above in the first paragraph and explained in more detail in Van Iten et al., we here interpret Sphenothallus as a thecate polypoid cnidarian whose systematic position within this phylum is uncertain.’
    1. 1.1Relating to or denoting the polyp stage in the life cycle of a coelenterate.
      Also called hydroid
      Compare with medusoid
      ‘A life cycle including both polypoid and medusoid phases that can be separate in space and scarcely overlapping in time characterizes many hydrozoans and most scyphozoans.’
      • ‘The polypoid stage represents the asexual phase of its life cycle.’
  • 2Medicine
    (of a growth) resembling or in the form of a polyp.

    ‘a benign polypoid lesion’
    • ‘Laryngoscopy revealed a polypoid lesion implanting on the anterior aspect of the subglottic cone.’
    • ‘Physical examination revealed a polypoid lesion at the right margin of the tongue.’
    • ‘Physical examination revealed a pedunculated polypoid mass measuring 0.5 cm in greatest dimension involving the midanterior two thirds of the right tongue blade.’
    • ‘At the time of cholecystectomy, the gallbladder was noted to have a thickened wall and a polypoid mass arising in the neck of the gallbladder.’
    • ‘By sigmoidoscopy, a submucosal ovoid polypoid mass measuring about 2 cm in greatest dimension was identified at 4 cm above the anal verge.’