prechiasmatic sulcus -->
chiasmatic groove
medical dictionary

The groove on the upper surface of the sphenoid bone running transversely between the optic canals bounded anteriorly by the sphenoidal limbus and posteriorly by the tuberculum sellae; forms in relationship to the optic chiasm.

Synonyms: sulcus prechiasmatis, chiasmatic sulcus, optic groove, prechiasmatic sulcus.

(05 Mar 2000)