Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Located or occurring between the ribs.
  • noun A space, muscle, or part situated between the ribs.

from The Century Dictionary.

  • In iron ship-building, noting a structural member composed of a number of short pieces fitted in the spaces between a series of other continuous structural members which it crosses: as, an intercostal floorplate, one in which the floor is in short pieces between the longitudinals; an intercostal keelson, intercostal longitudinal, one in short pieces between the frames; an intercostal angle-bar, intercostal seam-strap, one in short pieces between frames or deck-beams, etc.
  • Situated or intervening between successive ribs of the same side of the body: as, intercostal muscles, vessels, spaces.
  • noun An intercostal structure, as an artery, and especially a muscle; an intercostalis.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective (Anat. & Physiol.) Between the ribs; pertaining to, or produced by, the parts between the ribs.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective anatomy Between the ribs of an animal or person.
  • adjective nautical Between the ribs of a boat.
  • noun anatomy The intercostal muscles.
  • noun anatomy Something that is between the ribs of an animal.
  • noun nautical Hull reinforcing inserted between frames or bulkheads of a boat.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun muscles between the ribs; they contract during inspiration
  • adjective located or occurring between the ribs

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin intercostālis : inter– + Latin costa, rib; see kost- in Indo-European roots.]

Examples

  • Eleven of them are situated between the ribs, and are therefore termed intercostal; the twelfth lies below the last rib.

    IX. Neurology. 6c. The Thoracic Nerves

  • The ribs are situated one below the other in such a manner that spaces called intercostal spaces are left between them.

    II. Osteology. 4b. The Ribs

  • The ribs are moved in respiration by two superficial muscular layers, known as the intercostal muscles.

    The Hindu-Yogi Science Of Breath

  • Before Wednesday's game, the Mets placed pitcher Jon Niese on the disabled list with a strained intercostal muscle on his right side.

    Unspectacular as Usual, Pelfrey Notches a Win

  • He was able to call on Jason Bay, who missed the Mets' dreadful 18-game start to the season with a strained intercostal muscle.

    Reporter's Notebook

  • By its deep surface, it is in relation with the Lumbar fascia, the Serratus posticus inferior, the lower external intercostal muscles and ribs, inferior angle of the scapula, Rhomboideus major, Infraspinatus, and Teres major. [p. 313]

    Archive 2009-01-01

  • By its deep surface, it is in relation with the Lumbar fascia, the Serratus posticus inferior, the lower external intercostal muscles and ribs, inferior angle of the scapula, Rhomboideus major, Infraspinatus, and Teres major. [p. 313]

    The Not-So-Theology of the Body

  • And yeah, I know there are no leopards in Brazil, and that there's no such bone as an "intercostal clavicle" So what.

    "For the World is Hollow, and I Have Touched the Sky"

  • Upper costal breathing involves the upper third of your chest, moving primarily the intercostal muscles that connect the ribs.

    SO STRESSED

  • Upper costal breathing involves the upper third of your chest, moving primarily the intercostal muscles that connect the ribs.

    SO STRESSED

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