gyro-
Concise Oxford English Dictionary © 2008 Oxford University Press:
gyro- /ˈdʒʌɪrəʊ/
▶combining form
- 1 relating to rotation: gyromagnetic.
- 2 gyroscopic: gyrostabilizer.
– origin from Gk guros ‘a ring’.
'gyro-' also found in these Oxford entries:

