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umbonal

[ uhm-buh-nl ]

adjective

  1. having the shape or appearance of an umbo; bosslike:

    an umbonal structure.

  2. of, relating to, or near the umbo:

    the umbonal region.



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Other Words From

  • post·umbo·nal adjective
  • pre·umbo·nal adjective
  • sub·umbo·nal adjective

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Word History and Origins

Origin of umbonal1

1850–55; < Latin umbōn- (stem of umbō; umbo ) + -al 1

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Example Sentences

Valves smooth, thin, brittle; scuta with internal umbonal teeth on both sides.

Right-hand scutum alone furnished with an internal umbonal tooth: uppermost part of peduncle dark-coloured.

Its shell is considerably twisted just below the umbonal region, while its whole surface is densely striated.

Ligament wanting; shell gaping, with a styloid apophysis in the umbonal cavities.

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umboumbonate