exostome

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noun

The small aperture or foramen in the outer coat of the ovule of a plant.

Scrabble 17
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Meanings

nounexostome (plural exostomes)

plural exostomes

  1. biologyThe small aperture or foramen in the outer coat of the ovule of a plant.

Origin

From exo- + -stome.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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