- ob-
- ob- (also oc- before c; of- before f; op- before p) ► PREFIX forming words meaning: 1) to, towards: obverse. 2) against: opponent. 3) finality; completeness: obsolete. 4) technical in a direction or manner contrary to the usual.ORIGIN Latin ob 'towards, against, in the way of' .
English terms dictionary. 2015.