本站大部份資料在 2016 年後就未更新，若資料內無明確標示資料時間，請預設該資料為過時資料並斟酌使用，謝謝
動物學英中對照名詞等資訊。
| 英文名稱 | 中文名稱 | |
|---|---|---|
| 56993254 | oesophageal plexus | 食管（神經）叢 |
| 56993255 | oesophageal sclerite | 食管片 |
| 56993256 | oesophageal tonsils | 食管扁桃腺 |
| 56993257 | oesophageal valve | 食管瓣 |
| 56993258 | oesophageal; esophageal | 食道的；食管的 |
| 56993259 | oesophageo-cutaneous duct | 咽皮管；食道皮咽管 |
| 56993260 | oesophagoal sympathetic nervous system | 食管交感神經系 |
| 56993261 | oesophagoblast | 食管原細胞 |
| 56993262 | oesophagus; esophagus | 食管；食道 |
| 56993263 | oestradiol; estradiol | 動情二醇 |
| 56993264 | OESTRIDAE | 牛蠅科 |
| 56993265 | oestrin; estrin; estrone; oestrone | 動情素 |
| 56993266 | oestriol; estriol | 動情三醇 |
| 56993267 | oestrogen; estrogen | 動情激素 |
| 56993268 | oestrous; estrous | 動情的 |
| 56993269 | oestrus; estrus | 動情 |
| 56993270 | offspring-parent regression | 親子間迴歸 |
| 56993271 | offspring-parent relationship | 親子關係 |
| 56993272 | OGCOCEPHALIDAE | 蝙蝠魚科 |
| 56993273 | Ognorhynchus icterotis | 黃耳長尾鸚鵡 |
| 56993274 | oil gland | 脂腺 |
| 56993275 | oil immersion | 油浸組織 |
| 56993276 | oil lubricating tissue | 油潤組織 |
| 56993277 | Oilbird | 油鴟 |
| 56993278 | oilfishes; Baikal | 貝加爾油杜父魚類 |
| 56993279 | oilvospinal tract | 橄體脊髓束 |
| 56993280 | Okapi | 奧卡庇（屬）;中非產之一種鹿 |
| 56993281 | Okapia | 歐卡皮鹿（屬） |
| 56993282 | Okapia johnstoni | 歐卡皮鹿 |
| 56993283 | Okazaki fragment | 岡崎氏斷片 |
| 56993284 | old world monkey | 舊世界猿 |
| 56993285 | old-stone age; palaeolithic age | 舊石器時代 |
| 56993286 | olecranon fossa | 肘窩 |
| 56993287 | olecranon; olecranon process; elbow | 肘突 |
| 56993288 | oleic acid | 油酸 |
| 56993289 | olein; glycerol | 三油酸甘油脂 |
| 56993290 | olfaction | 嗅覺 |
| 56993291 | olfactogental dysplasia | 嗅性區發育不良 |
| 56993292 | olfactoreceptor | 嗅受器 |
| 56993293 | olfactory apparatus | 嗅器 |
| 56993294 | olfactory bulb; bulbus olfactorius | 嗅球 |
| 56993295 | olfactory capsule | 嗅囊 |
| 56993296 | olfactory cells | 嗅細胞 |
| 56993297 | olfactory center | 嗅覺中心 |
| 56993298 | olfactory epithelium | 嗅覺皮膜 |
| 56993299 | olfactory foramen | 嗅孔 |
| 56993300 | olfactory gland | 嗅腺 |
| 56993301 | olfactory lobe | 嗅葉；嗅神經葉 |
| 56993302 | olfactory nerve; nervus olfactorius | 嗅神經 |
| 56993303 | olfactory organ | 嗅器；嗅官 |