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Umbo vs Jumbo - What's the difference?

umbo | jumbo |

As nouns the difference between umbo and jumbo

is that umbo is (biology) a boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane; as, the umbo in the integument of the of echinoderms or in the tympanic membrane of the ear while jumbo is an especially large or powerful person, animal or thing.

As an adjective jumbo is

especially large or powerful.

umbo

English

Noun

  • (biology) A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane; as, the umbo in the integument of the of echinoderms or in the tympanic membrane of the ear.
  • (zoology) One of the lateral prominence just above the hinge of a bivalve shell.
  • (mycology) A bump or protrusion on the top of the cap.
  • (historical) The boss of a shield, at or near the middle, and usually projecting, sometimes in a sharp spike.
  • * 1786 : It is thirteen inches diameter, made of wood covered with leather, and an iron plate decorated with nails and mouldings; the boss or umbo projects four inches. — Francis Grose, A Treatise on Ancient Armour and Weapons , page xii.

    • Derived terms

    * umbonal * umbonic

    See also

    * boss ----

    jumbo

    English

    Adjective

    (-)
  • Especially large or powerful.

    • Noun

    (en noun)
  • An especially large or powerful person, animal or thing.

    • Derived terms

    * jumbo jet * superjumbo ----