1. Serving or acting as a means or aid
   - instrumental, subservient

See also: helpful, implement

• angiogenesis inhibitor
• angiogram
• angiography
• angiohemophilia
• angiologist
• angiology
• angioma
• angiomatous
• angiopathy
• angioplasty
• angiopteris
• Angiopteris evecta
• angiosarcoma
• angioscope
• angiosperm
• Angiospermae
• angiospermous
• angiospermous tree
• angiospermous yellowwood
• angiotelectasia
• angiotensin
• angiotensin I
• angiotensin II
• angiotensin II inhibitor
• angiotensin-converting enzyme