— ischiadic /is'kee ad"ik/ , ischiatic /is'kee at"ik/ , ischial , adj.
/is"kee euhm/ , n. , pl. ischia /-kee euh/ . Anat.
1. the lower portion of either innominate bone. See diag. under pelvis .
2. either of the bones on which the body rests when sitting.
[ 1640-50; ischíon hip-joint ]