Definition of trigonous in English:

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Pronunciation: /ˈtrɪɡənəs/

Entry from British & World English dictionary


chiefly Botany
Triangular in cross section: the seeds are trigonous
More example sentences
  • Seeds are extremely small, being less than 1 mm in size, with a wide variety of shapes (ellipsoid, oblongoid, ovoid, globose, trigonous or tetragonous).
  • Hermaphrodite flowers; ovary 3-3.5 cm. long, 1-1.5 cm. wide, rather acutely trigonous or 4-sided according to position.
  • One is African and supported by trigonous ovary in transverse section.


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

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