D defs.my
Entry 2 senses Webster, 1913

Protoplast

/prō′tə-plăst′/ · Pro·to·plast · IPA /ˈpɹoʊ.təˌplæst/
01 n. The thing first formed; that of which there are subsequent copies or reproductions; the original.
  1. 1.
    The thing first formed; that of which there are subsequent copies or reproductions; the original.
  2. 2.
    A first-formed organized body; the first individual, or pair of individuals, of a species.(Biol.)
    “A species is a class of individuals, each of which is hypothetically considered to be the descendant of the same protoplast, or of the same pair of protoplasts.” — Latham.