1. ceratin

noun. a fibrous scleroprotein that occurs in the outer layer of the skin and in horny tissues such as hair, feathers, nails, and hooves.


  • keratin
  • albuminoid
  • plume
  • plumage
  • horn
  • scleroprotein
  • hair


  • uncover
  • underdress
  • dress down
  • undercharge

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Example sentences of the word ceratin

1. Verb, past tense
Make ceratin the weight of the unit is adequately supported.

2. Noun, singular or mass
But it is a simple asphyxiant, so in ceratin cases a release of a large volume of argon can pose a hazard of asphyxiation.