\sfˈɛnɔ͡ɪd bˈə͡ʊn], \sfˈɛnɔɪd bˈəʊn], \s_f_ˈɛ_n_ɔɪ_d b_ˈəʊ_n]\
Definitions of SPHENOID BONE
- 2006 - WordNet 3.0
- 2011 - English Dictionary Database
- 1920 - A practical medical dictionary.
- 1898 - Warner's pocket medical dictionary of today.
- 1846 - Medical lexicon: a dictionary of medical science
- 1898 - American pocket medical dictionary
- 1916 - Appleton's medical dictionary
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By DataStellar Co., Ltd
By Stedman, Thomas Lathrop
By William R. Warner
An azygous bone, situate on the median line, and at the base of the cranium. It articulates with all the other bones of that cavity; supports them, and strengthens their union. Its form is singular, and resembles a hat with its wings extended. It has, 1. An inferior or guttural surface, on which is situate the crista, that joins the vomer; a channel, which concurs in forming the pterygo-palatine foramen; the pterygoid process; the pterygoid fossa; the scaphoid depression; the Vidian. or pterygoid canal; the foramina-ovale, spinale, &c. 2. A superior or cerebral surface, on which are: - the clinoid processes; the pituitary fossa; the foramina (ovale, rotundum, and spinale); the Apophysis of Ingrassias or lesser wing; the foramen opticum, &c. 3. An occipital or posterior surf ace, which is articulated with the hasilary process of the occipital bone. 4. An anterior or orbitar nasal surface; having, anteriorly, a crista to unite with the ethmoid bone; and, on each side, a round aperture, which leads into two cavities in the substance of the hone, separated by a middle septum, and called the sphenoidal sinuses. 5. Two zygomato-temporal or external surfaces, which correspond to the temporal and zygomatic fossae. Some divide the sphenoid into body or middle portion; and ala, which are four in number, and are subdivided into great (Temporal Plates or Wings, Alae magna) and little (Apophyses of Ingrassias, Alae minoâ€™res, Processus ensiformâ€™es). The Sphenoid suture surrounds the bone.
By Robley Dunglison
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