1Denoting exposure or openness.
- 1.1Expressing meeting or facing.
2Denoting opposition, hostility, or resistance.
- 2.1Denoting hindrance, blocking, or concealment.
3Denoting finality or completeness.
4(in modern technical words) in a direction or manner contrary to the usual; inversely.
Ob- occurs mainly in words of Latin origin; it is also found assimilated in the following forms: oc- before c; of- before f; op- before p
From Latin ob ‘towards, against, in the way of’.