cost-
1 
variant of costo- before a vowel:
costate.
Related Words
- costectomy
- costo-
cost-
combining form 
or costi- or costo-
Etymology: French, from Latin costa 
 : rib : costa 
< costectomy >
< costiform >
: costal and
< costoradial >
< costosternal >
or costi- or costo-
< costectomy >
< costiform >
: costal and
< costoradial >
< costosternal >