1. The hip-bone.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• uschium,
• jschium,
• kschium,
• oschium,
• 9schium,
• 8schium,
• iachium,
• izchium,
• ixchium,
• idchium,
• iechium,
• iwchium,
• isxhium,
• isvhium,
• ischum,
• ischim,
• Ischeum,
• Iscihm,
• Ischhiem,
• Ischieum

• ischemia,
• Isham,
• ischaemia.

The adjective form of the word "ischium" is "ischial".

The plural of the "ischium" can be the "ischia".

The singular of the "ischium" can be the "ischium".