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