protoorganism

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noun

An organism whose nature is so difficult to determine that it might be referred to either the animal or the vegetable kingdom.

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Meanings

nounprotoorganism (plural protoorganisms)

plural protoorganisms · alternative proto-organism

  1. biologyAn organism whose nature is so difficult to determine that it might be referred to either the animal or the vegetable kingdom.

    This tree represents a complex “phylogeny” of macromolecules all within one ancestral lineage, before the proto-organism.

    2013, Geoffrey Eglinton, Mary Teresa Joseph Murphy, Organic Geochemistry: Methods and Results

Origin

From proto- + organism.

Full word history & related roots →

Rhymes & wordplay

Anagrams

organotropism
Cite this entry
APA

protoorganism. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/protoorganism

MLA

“protoorganism.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/protoorganism. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “protoorganism,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/protoorganism.

Source: protoorganism on Wiktionary, CC BY-SA 4.0.