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.

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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

See Examples For:

umbonal

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

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

In the Trimerellidae, for example, some of the muscles are attached to a massive or vaulted platform situated in the medio-longitudinal region of the posterior half or umbonal portion of both valves.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" by Various

Valves 5; carina with the basal end produced into a small imbedded disc; scuta convex, without internal umbonal teeth; terga almost rudimentary, scarcely broader than the carina.

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