| OP | chemistry |
|---|---|
| OP | a word to which an independent meaning can be assigned |
| OP | of a shirt |
| OP | the policy of granting equal trade opportunities to all countries |
| OP | a consumer credit line that can be used up to a certain limit or paid down at any time |
| OP | a regulated investment company that regularly sells and redeems its shares |
| OP | a regulated investment company that regularly sells and redeems its shares |
| OP | a wrench having parallel jaws at fixed separation (often on both ends of the handle) |
| OP | allowing for future changes or revisions |
| OP | allowing for a spontaneous response |
| OP | without fixed limits or restrictions |
| OP | carefully observant or attentive |