| Misspelling | Correct Spelling |
| ad lib | ad libitum |
| airspace | air space ("air space" refers to lung capacity; "airspace" refres to flying) |
| air flow | airflow |
| anisoosmotic | anisosmotic |
| artefact | artifact |
| autocoid | autacoid |
| byproduct | by-product |
| dessicate | desiccate |
| distention | distension |
| en block | en bloc |
| hind limb | hindlimb |
| hypophyseal | hypophysial |
| hypoosmotic | hyposmotic |
| innoculate | inoculate |
| insert | inset (not a spelling mistake per se, but a frequent mistake in figure legends) |
| isoosmotic | isosmotic |
| lumena, lumens | lumina (plural of "lumen") |
| lumenal | luminal (adjective form of "lumen") |
| motor neuron | motoneuron |
| nucleus tractus solitarius | nucleus tractus solitarii |
| occassion | occasion |
| occurence | occurrence |
| open-chested dogs | open-chest dogs |
| pari pasu | pari passu (Latin) |
| pipet | pipette |
| protoncogene | protooncogene |
| red cells | red blood cells |
| space flight | spaceflight |
| transeptal | transseptal |
| warmup | warm-up (n.) |
| wave length | wavelength |
last edited 07/30/03