/sfee"noyd/, adj. Also, sphenoidal.
1. wedge-shaped.
2. Anat. of or pertaining to the compound bone of the base of the skull, at the roof of the pharynx. See diag. under skull.
3. Anat. the sphenoid bone.
[1725-35; < NL sphenoides < Gk sphenoeidés. See SPHEN-, -OID]

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Universalium. 2010.

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  • Sphenoid — Sphe noid, a. [Gr. ???; sfh n a wedge + e i^dos form: cf. F. sph[ e]no[ i]de.] 1. Wedge shaped; as, a sphenoid crystal. [1913 Webster] 2. (Anat.) Of or pertaining to the sphenoid bone. [1913 Webster] {Sphenoid bone} (Anat.), an irregularly shaped …   The Collaborative International Dictionary of English

  • Sphenoid — Sphe noid, n. 1. (Crystallog.) A wedge shaped crystal bounded by four equal isosceles triangles. It is the hemihedral form of a square pyramid. [1913 Webster] 2. (Anat.) The sphenoid bone. [1913 Webster] …   The Collaborative International Dictionary of English

  • sphenoid — [sfē′noid΄] adj. [ModL sphenoides < Gr sphēnoeides: see SPHENE & OID] 1. wedge shaped 2. Anat. designating or of the wedge shaped compound bones of the skull: see SKULL: Also sphenoidal n. 1. the sphenoid bone …   English World dictionary

  • Sphenoīd — Sphenoīd, vierflächige Kristallgestalt, Hemiëder der quadratischen oder rhombischen Pyramide; vgl. Kristall, S. 705 …   Meyers Großes Konversations-Lexikon

  • Sphenoid — Sphenoīd, hemiëdrische Form des tetragonalen und rhombischen Kristallsystems …   Kleines Konversations-Lexikon

  • Sphenoid — A bone at the base of the skull that is of a most irregular shape. The sphenoid bone consists of a central portion, (the body of the sphenoid) and six processes: two greater wings, two lesser wings and two pterygoid processes. The sphenoid bone… …   Medical dictionary

  • sphenoid — adj. & n. adj. 1 wedge shaped. 2 of or relating to the sphenoid bone. n. (in full sphenoid bone) a large compound bone forming the base of the cranium behind the eyes. Derivatives: sphenoidal adj. Etymology: mod.L sphenoides f. Gk sphenoeides f.… …   Useful english dictionary

  • sphenoid — I. adjective or sphenoidal Etymology: New Latin sphenoides, from Greek sphēnoeidēs wedge shaped, from sphēn wedge Date: 1732 1. of, relating to, or being a winged compound bone of the base of the cranium 2. (usually sphenoidal) having a wedged… …   New Collegiate Dictionary

  • Sphenoid — Als Sphenoid (zu altgriech. σφήν „Keil“) bezeichnet man: in der Medizin umgangssprachlich das Keilbein (Os sphenoidale) in der Kristallographie eine keilähnliche Form aus zwei Flächen, siehe Dieder in der Geometrie (ungenau) ein Disphenoid …   Deutsch Wikipedia

  • sphenoid — 1. adjective Wedge shaped. 2. noun The sphenoid bone …   Wiktionary

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