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 | |
|---|---|---|
| 56993604 | oral papilla | 口乳突 |
| 56993605 | oral plate | 口板 |
| 56993606 | oral pole | 口極 |
| 56993607 | oral siphon | 口吸管 |
| 56993608 | oral sucker | 口吸盤 |
| 56993609 | oral surface | 口側；口腔面；口面 |
| 56993610 | oral valve | 口瓣 |
| 56993611 | oralia | 口板 |
| 56993612 | Orange-belly treefrog; Rhacophorus aurantiventris | 橙腹樹蛙 |
| 56993613 | orangutan | 紅毛猩猩 |
| 56993614 | orb-spider | 球蛛；金蛛 |
| 56993615 | orbicularis muscle | 輪匝肌 |
| 56993616 | orbit (orbita) | 眼眶；眶 |
| 56993617 | orbital | 眶骨的；眼眶的 |
| 56993618 | orbital cavity; orbit | 眼眶；眶 |
| 56993619 | orbital crest | 眶脊 |
| 56993620 | orbital fissure | 眶溝 |
| 56993621 | orbital gland; infraorbital gland | 眶下腺 |
| 56993622 | orbital sinus | 眶（靜脈）竇 |
| 56993623 | orbital wing | 眶翼 |
| 56993624 | orbito-nasal septum | 眶鼻隔 |
| 56993625 | orbito-sphenoid bone | 眶蝶骨 |
| 56993626 | ORCAELIDAE | 小虎鯨科 |
| 56993627 | orchiectomy | 睪丸切除術 |
| 56993628 | orchiopexy | 睪丸固定術 |
| 56993629 | orchitis | 睪丸炎 |
| 56993630 | orcinol | 5-甲基-苯二酚 |
| 56993631 | Orcinus orca | 虎鯨 |
| 56993632 | order | 目 |
| 56993633 | ordinary connective tissue | 普通結締組織 |
| 56993634 | Ordovician period | 奧陶紀 |
| 56993635 | Oreamnos | 北美山羊（屬） |
| 56993636 | Oreamnos americanus | 北美山羊 |
| 56993637 | ORECTOLOBIDAE | 鬚鯊科 |
| 56993638 | Orectolobus japonicus | 日本鬚鮫 |
| 56993639 | Orectolobus maculatus | 斑鬚鮫 |
| 56993640 | OREODONTA | 高齒羊亞目 |
| 56993641 | Oreodontoides | 岳齒獸類 |
| 56993642 | Oreodonts | 岳齒獸類 |
| 56993643 | OREOSOMATIDAE | 仙海魴科 |
| 56993644 | Orepithecus | 原始猿人（屬） |
| 56993645 | organ (orgaoun) | 器官 |
| 56993646 | organ analogue | 器官原基 |
| 56993647 | organ field | 器官區 |
| 56993648 | organ forming area | 器官形成區 |
| 56993649 | organ forming substance | 器官形成質 |
| 56993650 | organ of Corti | 哥蒂氏器；螺旋器 |
| 56993651 | organ of Zuckerkandl | 塞干氏器 |
| 56993652 | organ specificity | 器官專一性 |
| 56993653 | organ system | 器官系統 |