| OYE | old yellow enzyme |
|---|---|
| OAP | Office of Adolescent Pregnancy; old age pension, old age pensioner; ophthalmic artery pressure; oste... |
| OT | objective test; oblique talus; occlusion time; occupational therapist, occupational therapy; ocular ... |
| YE | yeast extract; yellow enzyme |
| YEH2 | reduced yellow enzyme |