ob- — ODE · Shobdo

ob- /ɒb

▸ prefix

1 denoting exposure or openness:

obverse.

▪ expressing meeting or facing:

occasion.

2 denoting opposition, hostility, or resistance:

opponent.

▪ denoting hindrance, blocking, or concealment:

obviate.

3 denoting finality or completeness:

obsolete.

4 (in modern technical words) in a direction or manner contrary to the usual; inversely:

obconical.

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.

– ORIGIN from Latin ob ‘towards, against, in the way of’.