Definition of edentulous in US English:

edentulous

adjective

Zoology Medicine
  • Lacking teeth.

    • ‘The edentulous anterior portion of the mandible is approximately half as thick as the tooth-bearing region.’
    • ‘The two intermediate species are estimated to weigh between 200 and 500 kg and include Maleevosaurus novojilovi, a carnivore, and Gallimimus bullatus, an edentulous putative omnivore.’
    • ‘If the edentulous and presumably less carnivorous theropods are considered as part of the predator guild, then total species diversity is similar in both mammalian and theropod guilds.’
    • ‘The lower jaw of this form may have been edentulous and supported a gular sac, like that of a giant pelican or baleen whale.’
    • ‘He was edentulous, and neck examination showed an enlarged, tender, right submandibular lymph node that had been present for 8 to 9 months without associated fever or weight loss.’

Origin

Early 18th century: from Latin edentulus, from e- (variant of ex-) ‘out’ + dens, dent- ‘tooth’ + -ulous.

Pronunciation

edentulous

/ēˈden(t)SHələs/