Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English

vitell(i)- Also vitello-.

The yolk of an egg.

[Latin vitellus, yolk.]

In medicine and zoology, the vitellus (plural vitelli) is the yolk of an egg or ovum; the adjective relating to the yolk is vitelline (as in the vitelline membrane, a transparent membrane surrounding and secreted by the fertilized ovum, preventing the entry of further spermatozoa); vitellogenin is a protein present in the blood, from which the substance of egg yolk is derived; vitellin is a protein found in the yolks of eggs; vitellogenesis is the formation of yolk.

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