pro·to·plast 
(pr
ōt
ə-pl
ăst
′)
n. A cell of a plant, fungus, bacterium, or archaeon from which the cell wall has been removed, leaving the protoplasm and plasma membrane.
[French protoplaste, from Old French, the first man, from Late Latin prōtoplastus, from Greek prōtoplastos : prōto-, proto- + plastos, formed, molded; see -PLAST.]
pro′to·plastic adj.