See also: proto-organism

English edit

Alternative forms edit

Etymology edit

proto- +‎ organism

Noun edit

protoorganism (plural protoorganisms)

  1. (biology) An organism whose nature is so difficult to determine that it might be referred to either the animal or the vegetable kingdom.
    • 2013, Geoffrey Eglinton, Mary Teresa Joseph Murphy, Organic Geochemistry: Methods and Results[1]:
      This tree represents a complex “phylogeny” of macromolecules all within one ancestral lineage, before the proto-organism.

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