umbo

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The dorsal umbo, the articulate seed-wing, the persistent fascicle-sheath, the dorsal and ventral stomata of the leaf and its serrate margins, the dentate walls of the ray-tracheids have become fixed and constant.

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Definitions (7)

Toggle American Heritage definitions American Heritage Dictionary (3)

  1. noun The boss or knob at the center of a shield.
  2. noun Biology A knoblike protuberance arising from a surface, as the prominence near the hinge of a bivalve shell or the projection at the scale tip of a seed-bearing cone.
  3. noun Anatomy A small projection at the center of the outer surface of the eardrum.

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Examples (50)

  • I like Grey Goose with a twist of valium email umbo makes a lot of sense here. —  East Side Boxing
  • British authorities are kowtowing and rubberstamping such behaviour through politically correct bureaucratic umbo jumbo. —  Whale Oil Beef Hooked
  • The centre or umbo is darker colored; flesh dry, tough and white. —  Among the Mushrooms A Guide For Beginners
  • The edges were obtuse, the caps fleshy, then corky, smooth, the upper ends not regular, oblique in the form of an umbo or little knob, the pellicles or outside layers thin and easily separated. —  Among the Mushrooms A Guide For Beginners
  • Prepositional Phrases u mome_, above: kurum' u mome yarime_, hang it over the table; u bane_, behind; mel' an' u ban' ando_, the child is behind the man; ul' umbo(le)_, in the middle of; Veke ul' umbol' ando_, he is at Vee Conjunctions I. Copulative -u(ne)_, and, with; naga kitoval' u kene' ema_, I killed a black and white parrot Une is generally only used to connect two nouns, and is placed between the two. —  The Mafulu Mountain People of British New Guinea
 

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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Latin umbō, umbōn-; see nobh- in Indo-European roots.

Toggle Century etymologies Century Dictionary (1)

  1. New Latin, from Latin umbo(n-), the boss of a shield, any boss, knob, projection, also poetical a shield; akin to Greek άμβων, a boss, elevation, pulpit (see ambo), and to L. umbilicus, Greek ὁμφαλος, navel: see umbilicus.
 

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/ˈəmboʊ/
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