tetragenous

T1E1T1R1A1G2E1N1O1U1S1

adjective

Involving groups of four; arranged in fours.

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Meanings

adjectivetetragenous (not comparable)
  1. not comparablebiologyInvolving groups of four; arranged in fours.

    Mussels that employ all four demibranchs for brooding are referred to as tetragenous.

    2010, James H. Thorp, Alan P. Covich, Ecology and Classification of North American Freshwater Invertebrates
    2 more examples

    The leaves are arranged in four longitudinal rows along the stem. There are two rows of smaller leaves attached to the upper side of stem and two rows of larger leaves attached laterally. The strobili are tetragenous (four-angled) […]

    2006, Anil Kumar, Botany for Degree Pteridophyta, page 184

    Eggs are incubated in all four gills (tetragenous). In the other groups the gill structure is stabilized by increasing the number of connectives and by organizing them into continuous walls (Kat 1984).

    2012, G. Bauer, K. Wächtler, Ecology and Evolution of the Freshwater Mussels Unionoida, page 234

Origin

From tetra- + -genous.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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