Source : Webster's Revised Unabridged Dictionary (1913)

Albumen \Al*bu"men\, n. [L., fr. albus white.]
   1. The white of an egg.

   2. (Bot.) Nourishing matter stored up within the integuments
      of the seed in many plants, but not incorporated in the
      embryo. It is the floury part in corn, wheat, and like
      grains, the oily part in poppy seeds, the fleshy part in
      the cocoanut, etc.

   3. (Chem.) Same as {Albumin}.

Source : WordNet®

albumen
     n 1: a simple water-soluble protein found in many animal tissues
          and liquids [syn: {albumin}]
     2: the white of an egg; the nutritive and protective gelatinous
        substance surrounding the yolk consisting mainly of
        albumin dissolved in water [syn: {egg white}, {ovalbumin}]