Definition of vitellin in English:

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Pronunciation: /vəˈtelən/
Pronunciation: /vīˈtelən/


The chief protein constituent of egg yolk.
Example sentences
  • The monoclonal antibodies used came from the yolk proteins vitellin and vitellogenin of the spined soldier bug, Podisus maculiventris, and the minute pirate bug, Orius insidiosus.
  • One of the major changes that occurs during the maturation of oocytes is the accumulation of yolk protein, or vitellin.
  • The increase in the number descriptions of vitellogenin and vitellin has increased the ability to comprehend the differences that exist in decapod crustaceans.


Mid 19th century: from vitellus + -in1.

For editors and proofreaders

Syllabification: vi·tel·lin

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