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umbonal

American  
[uhm-buh-nl] / ˈʌm bə nl /
Also umbonic

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.


Other Word Forms

  • postumbonal adjective
  • preumbonal adjective
  • subumbonal adjective

Etymology

Origin of umbonal

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

From A Monograph on the Sub-class Cirripedia With Figures of all the Species. by Darwin, Charles

Valves 5; carina with a truncated base; scuta oval, with the basal margin very short, furnished with small internal umbonal teeth; terga, with the basal point very obliquely truncated.

From A Monograph on the Sub-class Cirripedia With Figures of all the Species. by Darwin, Charles

Valves 3; scuta pointed, oval, placed almost transversely to the peduncle; internal umbonal teeth strong: terga absent: carina with the basal end produced into a large, oblong, imbedded disc.

From A Monograph on the Sub-class Cirripedia With Figures of all the Species. by Darwin, Charles

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

From A Monograph on the Sub-class Cirripedia With Figures of all the Species. by Darwin, Charles

Scuta highly convex, broadly oval, apex broad rounded; basal margin narrow, much curved; no internal, umbonal teeth; basal internal rim strong, running up part of the occludent margin.

From A Monograph on the Sub-class Cirripedia With Figures of all the Species. by Darwin, Charles