Definition of tomentum in English:

tomentum

Syllabification: to·men·tum
Pronunciation: /tōˈmentəm
 
/

noun (plural tomenta /-tə/)

Botany
A layer of matted woolly down on the surface of a plant.
More example sentences
  • Setae type range from being thin and highly branched, forming dense tomenta, to being broad and spatulate.
  • Leaves lack the thick tomentum beneath the leaf that characterizes the white linden.
  • With its thick tomentum and indumentum and its pointed dark green leaves, with its dense growth habit, and with its pretty flowers, it is a major asset to any garden.

Origin

late 17th century: from Latin, literally 'cushion stuffing'.

Derivatives

tomentose

Pronunciation: /tōˈmentōs, ˈtōmənˌtōs/
adjective
More example sentences
  • Each inflorescence bears numerous, small flowers with widely spreading tepals, tomentose on the outer surface, and a labellum with well-developed side lobes.
  • Both the corolla and calyx are fairly rigid and tomentose externally.
  • The petals are bright Indian-orange, silvery tomentose outside and glossy inside.

tomentous

adjective
More example sentences
  • It is erect and rigid, light green in color slightly shaded reddish brown, fairly tomentous and glandular, and bearing some tiny prickles.

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Pronunciation: grəˈmɛːrɪən
noun
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