prothallium

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noun

A plant, usually a pteridophyte, in gametophyte stage in the metagenesis cycle.

Similar
prothallus
OriginLatin pro ← Ancient Greek θᾰλλός →
Scrabble 18
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Meanings

nounprothallium (plural prothallia)

plural prothallia

  1. A plant, usually a pteridophyte, in gametophyte stage in the metagenesis cycle.
  2. The young gametophyte of a liverwort or peat moss.

Synonyms & antonyms

Similar
prothallus

Origin

  1. Ancient Greekθᾰλλός“young branch, twig”
  2. Latinpro“forwards”
  3. Englishprothallium

From Latin pro (“forwards”) + Ancient Greek θᾰλλός (thăllós, “young branch, twig”).

More words from Latin, Ancient Greek

Full word history & related roots →
Cite this entry
APA

prothallium. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/prothallium

MLA

“prothallium.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/prothallium. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “prothallium,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/prothallium.

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