1. Depending on free oxygen or air
   - aerobic, aerophilous

See also: aerobiotic, oxidative

• circulating library
• circulation
• circulative
• circulator
• circulatory
• circulatory failure
• circulatory system
• circum-
• circumambient
• circumambulate
• circumboreal
• circumcenter
• circumcentre
• circumcircle
• circumcise
• circumcision
• circumduction
• circumference
• circumferent
• circumferential
• circumflex
• circumflex artery
• circumflex artery of the thigh
• circumflex femoral vein
• circumflex humeral artery