Coracoid

Definitions

  • Webster's Revised Unabridged Dictionary
    • Coracoid (Anat) Pertaining to a bone of the shoulder girdle in most birds, reptiles, and amphibians, which is reduced to a process of the scapula in most mammals.
    • Coracoid Shaped like a crow's beak.
    • n Coracoid The coracoid bone or process.
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Century Dictionary and Cyclopedia
    • coracoid Shaped like a crow's beak.
    • coracoid Pertaining to the coracoid; connected with the coracoid, as, the coracoid ligament.
    • n coracoid The distal or ventral element of the scapular arch, extending from the scapula to or toward the sternum, of whatever size, shape, or position: so named from the fact that in adult man it somewhat resembles the beak of a crow in size and shape. See cut under scapula. In reptiles, birds, and monotrematous mammals the coracoid is a comparatively large, distinct, and independent bone, articulated at one end with the shoulder-blade and at the other with the sternum. (See cuts under hypoclidium and pectoral.) In all mammals above the monotremes it is much reduced, becoming a mere process of the scapula, firmly ankylosed therewith and having no connection with the sternum, but normally having an independent center of ossification. In amphibians the coracoid varies in condition and relations, but when present conforms to the above definition. In batrachians the coracoid is divided by a large membranous space or fontanel into a coracoid proper, which lies behind this space, a persistently cartilaginous epicoracoid, which bounds the space internally, and a precoracoid in front of it. In fishes the term coracoid has been applied to several different parts, on the assumption of their homology with the coracoid of the higher vertebrates (see cut under scapulocoracoid): by Cuvier and his followers, to the teleotemporal; by Owen and others, to the prescapula; by Parker and other late writers, to the hypocoracoid; by Gill, to the inner cartilage of the scapular arch and the bones into which it is disintegrated in the higher fishes. See these names, and also ectocoracoid, epicoracoid, hypercoracoid, precoracoid, procoracoid.
    • n coracoid In ichthyology, a large bone of the shoulder-girdle; the clavicle; not homologous with the coracoid of Agassiz or of Parker, or the coracoideum of Vogt and Yung.
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Chambers's Twentieth Century Dictionary
    • adj Coracoid kor′a-koid shaped like a crow's beak
    • n Coracoid (anat.) an important paired bone in the breast-girdle, forming along with the scapula the articulation for the fore-limb, and always lying ventrally
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Etymology

Webster's Revised Unabridged Dictionary
Gr. ; ko`rax crow + e'i^dos form

Usage

In literature:

The scapula (with supra-scapula) is the pleurapophysis, the coracoid the haemapophysis, of the occipital vertebra.
"Form and Function" by E. S. (Edward Stuart) Russell
Coracoid, of birds and reptiles, 70.
"On the Genesis of Species" by St. George Mivart
Many axillary tracks passed in the closest proximity to the coracoid, but this again I never saw separated.
"Surgical Experiences in South Africa, 1899-1900" by George Henry Makins
L. Coracoid attachment of the lesser pectoral muscle.
"Surgical Anatomy" by Joseph Maclise
The treatment is the same as for sub-coracoid dislocation.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition." by Alexander Miles
The acromion and coracoid processes of the scapula are rudimentary.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7" by Various
The thoracic artery (3) arises from the subclavian opposite the base of the coracoid artery, or from the base of the coracoid artery.
"Thoracic and Coracoid Arteries In Two Families of Birds, Columbidae and Hirundinidae" by Marion Anne Jenkinson
The element often termed "coracoid" in these fossils would be the scapula.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 4" by Various
The coracoid is one of the most characteristic bones of the bird's skeleton.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7" by Various
It may be mentioned, however, that there is not unfrequently a separate coracoid bone.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10" by Various
Among Lizards both scapula and coracoid are widely expanded, and the coracoid is always attached to the sternum.
"Dragons of the Air" by H. G. Seeley
Both have the median "sternum" in contact with the coracoid plates.
"The Ancestry of Modern Amphibia: A Review of the Evidence" by Theodore H. Eaton
The coracoids are robust, and the clavicles are strongly arched.
"A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus" by Linda Trueb
The coracoids are robust, twice as stout as the clavicles.
"Neotropical Hylid Frogs, Genus Smilisca" by William E. Duellman
This forms a kind of hook curved towards the inside; it represents the coracoid process.
"Artistic Anatomy of Animals" by Édouard Cuyer
The coracoid is a prominent rounded nodule.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 6" by Various
The coracoidal elements will be dealt with later.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard
Messrs. Newton and Gadow founded this species on a fragment of a sternum, a pair of coracoids, eight humeri, and a pair of tarso-metatarsi.
"Trees. A Woodland Notebook" by Herbert Maxwell
Messrs. Newton and Gadow founded this species on a fragment of a sternum, a pair of coracoids, eight humeri, and a pair of tarso-metatarsi.
"Extinct Birds" by Walter Rothschild
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In science:

Brachiosaurus, none of which pertain to the coracoid, humerus or femur (Table 1).
Aspects of the history, anatomy, taxonomy and palaeobiology of sauropod dinosaurs
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