Definition of pruinose in English:

pruinose

Syllabification: pru·i·nose
Pronunciation: /ˈpro͞oəˌnōs
 
/

adjective

chiefly Botany
  • (Of a surface, such as that of a grape) covered with white powdery granules; frosted in appearance.
    More example sentences
    • In L. forcipatus, it was completely pruinose (covered ventrally, laterally and dorsally) 72.5% of the time; L. disjunctus was never completely pruinescent, and never covered dorsally.
    • Main branches have a pruinose bark; twigs are either glabrous, pruinose or hairy. Phyllodes are greyish-green or glaucous, occasionally pruinose.

Origin

early 19th century: from Latin pruinosus, from pruina 'hoarfrost'.

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