Source : Webster's Revised Unabridged Dictionary (1913)

Plasson \Plas"son\, n. [NL., fr. Gr. ? to form.] (Biol.)
   The albuminous material composing the body of a cytode.

   Note: It is considered simpler than protoplasm of an ordinary
         cell in that it has not undergone differentiation into
         the inner cell nucleus and the outer cell substance.
         --Haeckel.