Webster’s Revised Unabridged Dictionary · 1913
Plasson
Plas′son (plăs′sŏn), n. [NL., fr. Gr. πλάσσειν to form.] (Biol.) The albuminous material composing the body of a cytode.
☞ 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.