combining form
or acro- also akr- or akro-
Etymology: Middle French or Greek; Middle French acro-, from Greek akr-, akro-, from akros topmost, extreme; akin to Greek akmē point — more at edge
1. : beginning : end : tip
acro logy
2.
a. : top : peak : summit
acro petal
acro cephaly
b. : height
acro phobia
c. : extremity of the body, especially the human body
acro cyanosis