Definition of trigonous in English:


Line breaks: trig|on¦ous
Pronunciation: /ˈtrɪɡənəs


chiefly Botany
  • Triangular in cross section: the seeds are trigonous
    More example sentences
    • In superior view the fruits are markedly trigonous with three obtuse angles.
    • One is African and supported by trigonous ovary in transverse section.
    • Seeds are extremely small, being less than 1 mm in size, with a wide variety of shapes (ellipsoid, oblongoid, ovoid, globose, trigonous or tetragonous).


early 19th century: from Greek trigōnos (see trigon).

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