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Definition of: protoplast
(prō′tə·plast) noun Biol.
1. That which is first formed; the original or primordial cell.
2. The parent pair or one of the parent pair of the first-formed individuals of a species.
3. The protoplasmic contents of a cell.
4. A plastid. [<F protoplaste <LL protoplastus <Gk. protoplastos formed first <prōtos first + plastos formed <plassein form]
—pro′to·plas′tic adjective
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