1. (noun)albumin, albumen a simple water-soluble protein found in many animal tissues and liquids Synonyms: albumin, ovalbumin, albumen, white, egg white
2. (noun)egg white, white, albumen, ovalbumin the white part of an egg; the nutritive and protective gelatinous substance surrounding the yolk consisting mainly of albumin dissolved in water Synonyms: egg white, white, tweed, flannel, whiteness, gabardine, albumen, albumin, ovalbumin