[ˈɔ:təˌkɔid]
自体有效物质：一度建议用此代替激素(hormone)，最近提出，作为尚不适于现行功能分类的各种具有生理活性的内源性物质(组胺、血清素，血管紧张素、前列腺素等)的总称- ophthalmotrope
- ophthalmotropometer
- ophthalmovascular
- ophthalmoxerosis
- ophthalmoxyster
- Ophthetic
- Ophthochlor
- -opia
- opian
- opianine
- opiate
- Opie paradox
- opioid
- opiomania
- opipramol hydrochloride
- Opisocrostis
- opisthe
- opisthenar
- opisthencephalon
- opisthiobasial
- opisthion
- opisthionasial
- opistho-
- opisthocranion
- opisthogenia