Manubrium definition

mə-no͝obrē-əm, -nyo͝o-
manubria manubriums
See word origin
Frequency:
A body part or process shaped like a handle, especially:
  • The broad upper division of the sternum with which the clavicle and first two ribs articulate.
  • The long tapering process of the malleus attached to the central portion of the eardrum.
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A handlelike structure, process, or part.
  • The portion of a jellyfish or other cnidarian that bears the mouth at its tip.
  • The uppermost of the three bony segments constituting the breastbone in mammals.
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A body part or process shaped like a handle, especially:
  • The broad upper division of the sternum with which the clavicle and first two ribs articulate.
  • The long tapering process of the malleus attached to the central portion of the eardrum.
noun
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(anatomy) The broad, upper part of the sternum.
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(zoology) The tube extending from the central underside of a jellyfish and ending in a mouth.
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Other Word Forms

Noun

Singular:
manubrium
Plural:
manubriums

Origin of manubrium

  • Latin handle from manus hand man-2 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin manÅ«brium (“handle").

    From Wiktionary

Manubrium Sentence Examples

  • The manubrium is absent altogether in the fresh-water medusa Limnocnida, in which the diameter of the mouth exceeds half that of the umbrella; on the other hand, the manubrium may attain a great length, owing to the centre of the sub-umbrella with the stomach being drawn into it, as it were, to form a long proboscis, as in Geryonia.

  • The mouth may be a simple, circular pore at the extremity of the manubrium, or by folding of the edges it may become square or shaped like a Maltese cross, with four corners and four lips.

  • The stomach may be altogether lodged in the manubrium, from which the radial canals then take origin directly as in Geryonia (Trachomedusae); it may be with or without gastric pouches.

  • The sense-cells form, in the first place, a diffuse system of scattered sensory cells, as in the polyp, developed chiefly on the manubrium, the tentacles and the margin of the umbrella, where they form a sensory ciliated epithelium covering the nerve-centres; in the second place, the sense-cells are concentrated to form definite sense-organs, situated always at the margin of the umbrella, hence often termed " marginal bodies."

  • Buds may be produced from the manubrium, radial canals, ring-canal, or tentaclebases, or from an aboral stolon (Narcomedusae).

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Words near manubrium in the Dictionary