| sphene | <chemical> A mineral found usually in thin, wedge-shaped crystals of a yellow or green to black colour. It is a silicate of titanium and calcium; titanite. Origin: F. Sphene, fr. Gr. A wedge. Source: Websters Dictionary (01 Mar 1998) |
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| sphenethmoid | <anatomy> Of or pertaining to both the sphenoidal and the ethmoidal regions of the skull, or the sphenethmoid bone. <zoology> Sphenethmoid bone, a bone of the skull which surrounds the anterior end of the brain in many amphibia; the girdle bone. Origin: Sphenoid + ethmoid. (20 Mar 1998) |
| sphenethmoidal | <anatomy> Relating to the sphenoethmoid bone; sphenoethmoid. Source: Websters Dictionary (01 Mar 1998) |