ethmoid

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Furthermore, the plane of the occipital foramen ('b c') forms a somewhat smaller angle with the axis in these particular prognathous skulls than in the orthognathous; and the like may be slightly true of the perforated plate of the ethmoid--though this point is not so clear.

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Definitions (7)

Toggle American Heritage definitions American Heritage Dictionary (2)

  1. adjective Of, relating to, or being a light spongy bone located between the orbits, forming part of the walls and septum of the superior nasal cavity, and containing numerous perforations for the passage of the fibers of the olfactory nerves.
  2. noun The ethmoid bone.

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Examples (50)

  • When pain coming from the sinus infection headache is being felt in the area between and behind your eyes, then the most likely sinuses that have been infected should be the ethmoid sinuses since they are the ones that are located in the deeper recesses of the nose. —  Find Free Articles - ArticlesBase
  • It contains only two ossifications in its cartilaginous substance (the sphen-ethmoid and the ex-occipital), being protected by the membrane bones the parieto-frontals above and the parasphenoid below In the mammal it is enormously inflated, and the otic capsules are imbedded in its wall. —  Text Book of Biology, Part 1: Vertebrata
  • The basilar plate and the trabeculć, which are developed from the chorda sheath, give origin to three bones, which might possibly be considered equivalent to vertebral centra--the basioccipital, the basisphenoid, and the Riechbein (ethmoid). —  Form and Function A Contribution to the History of Animal Morphology
  • Another bone assisting to form the skull, but not here seen, is called the ethmoid (sieve-like, from being full of holes), and is situated between the sockets of the eyes, forming the roof of the nose THE BONES OF THE HEAD are classed as follows: eight belonging to the Cranium, and fourteen to the Face. —  The People's Common Sense Medical Adviser in Plain English or, Medicine Simplified, 54th ed., One Million, Six Hundred and Fifty Thousand
  • While it is white and without smell, and the dog is not too much emaciated, the termination may be favourable; but when it becomes of a darker colour, and mingled with blood, and offensive, the ethmoid or turbinated bones are becoming carious, and death supervenes. —  The Dog
 

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Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. French ethmoïde, from Greek ēthmoeidēs, sievelike : ēthmos, strainer (from ēthein, to sift) + -oeidēs, -oid.

Toggle Century etymologies Century Dictionary (1)

  1. from Gr.ἠθμοειδής, like a strainer or sieve (το\ ἠθμοειδε\ς ὀστοῦν (Galen), the ethmoid bone), from ἠθμός, a strainer, colander, sieve, from ἤθειν, ἠ/θέειν, sift, strain.
 

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/ˈɛθmɔɪd/
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