D defs.my
Entry 1 sense Webster, 1913

Protoörganism

· Pro·to·ör·gan·ism · IPA
01 n. An organism whose nature is so difficult to determine that it might be referred to either the animal or the vegetable kingdom.
  1. 1.
    An organism whose nature is so difficult to determine that it might be referred to either the animal or the vegetable kingdom.(Biol.)