Pterygoid

Definitions

  • Webster's Revised Unabridged Dictionary
    • a Pterygoid (Anat) Like a bird's wing in form; as, a pterygoid bone.
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Century Dictionary and Cyclopedia
    • pterygoid Wing-like or wing-shaped; aliform or alate: specifically applied in anatomy to certain bones or bony processes and associate parts.
    • pterygoid The external pterygoid process is a process or extension of the alisphenoid, or great, wing of the sphenoid bone, having no independent center of ossification, and never being a distinct part.
    • pterygoid The internal pterygoid process, on the other hand, is a distinct bone, the pterygoid proper, having its own center of ossification, and representing the freely articulated pterygoid bone of lower vertebrates. These processes are also distinguished as ectopterygoid and entopterygoid.
    • pterygoid The combined internal and external pterygoid processes, the two parts being distinguished as the internal and external pterygoid plates.
    • pterygoid The pyramidal process, or tuberosity of the palate.
    • n pterygoid In zoology and anatomy: A bone of the facial part of the skull, forming a part of the hard palate, or pterygopalatal bar, commonly a horizontal rod-like bone, one of a pair on each side of the median line intervening between the palatal and the quadrate bone, or suspensorium of the mandible, and movably articulated with both, frequently also articulating with the basisphenoidal rostrum of the skull: in any mammal, detached from its posterior connection with the suspensorium, and commonly immovably sutured with the palatal and ankylosed with the sphenoid, when it forms the part known in human anatomy as the internal pterygoid process of the sphenoid. In fishes there are several different pterygoid bones, entering into the formation of the pterygopalatal bar or palatoquadrate arch, and distinguished as entopterygoid, ectopterygoid, and metapterygoid: see these words, and cut under palatoquadrate. See also cuts under desmognathous, dromæognathous, periotic, Petromyzon, Physeter, poison-fang, Python, and temporomastoid.
    • n pterygoid A pterygoid muscle.
    • n pterygoid plural In entomology, same as pterygoda.
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Chambers's Twentieth Century Dictionary
    • n Pterygoid ter′i-goid one of a pair of bones in the facial apparatus of some vertebrata behind the palatines, known in human anatomy as the pterygoid plates of the sphenoid bone
    • adj Pterygoid aliform or alate
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Etymology

Webster's Revised Unabridged Dictionary
Gr. , , a wing + -oid,

Usage

In literature:

PTERYGOID MUSCLES, and the under jaw, 10.
"Resonance in Singing and Speaking" by Thomas Fillebrown
P.pt., the palato-pterygoid bar (upper jaw bar).
"Text Book of Biology, Part 1: Vertebrata" by H. G. Wells
C. External pterygoid process lying on the levator and tensor palati muscles.
"Surgical Anatomy" by Joseph Maclise
The pterygoid and quadrate bones present no difference.
"The Variation of Animals and Plants Under Domestication, Vol. I." by Charles Darwin
From the origin the muscle passed posterodorsad and laterad of the pterygoid flange.
"The Adductor Muscles of the Jaw In Some Primitive Reptiles" by Richard C. Fox
This region between the quadrate and the orbit is occupied by a pterygoid with three projections.
"A New Order of Fishlike Amphibia From the Pennsylvanian of Kansas" by Theodore H. Eaton
Dorsal view of right pterygoid of Mourning Dove.
"Jaw Musculature of the Mourning and White-winged Doves" by Robert L. Merz
The pterygoid is slender and well developed.
"The Systematics of the Frogs of the Hyla Rubra Group in Middle America" by Juan R. León
Farther posteriorly the maxillary decreases in size, and the pterygoid and posterior maxillary process diverge medially from it.
"Cranial Osteiology of the Hylid Frog, Smilisca baudini" by Linda Trueb
Pt1, Pterygoid, anterior process.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 4" by Various
The basi-pterygoids (bpg) are mere knobs, and the common eustachian opening is seen between them.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 7" by Various
The nasal bones which, together with the vomer, form the nose, are likewise dermal bones, and so are the pterygoids and palatines.
"Degeneracy" by Eugene S. Talbot
The pterygoid is broad medially and posteriorly, although pointed at its posterior tip.
"A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America)" by John Wellman
The pterygoids are uniformly tri-radiate structures.
"A Synopsis of Neotropical Hylid Frogs, Genus Osteocephalus" by Linda Trueb
Ossification follows in the mid-parts of the anterolateral arms and occurs last in the pterygoid pedicles.
"Neotropical Hylid Frogs, Genus Smilisca" by William E. Duellman
There are no vomerine, palatine, or pterygoid teeth, such as are met with in Amphibia and Reptilia.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard
The basisphenoid has on each side a well marked pterygoidal apophysis.
"Trees. A Woodland Notebook" by Herbert Maxwell
The basisphenoid has on each side a well marked pterygoidal apophysis.
"Extinct Birds" by Walter Rothschild
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