| obalans
imbalance |
| Obducent
coroner / pathologist / medical examiner |
| Obduktion
Postmortem / autopsy / postmortem examination |
| Obehag
Malaise / discomfort |
| obehaglig
unpleasant |
| Oberäknelig
haywire / erratic |
| obeslutsam
indecisive |
| obestämd
undetermined |
| obligatorisk
mandatory |
| Obotlig
Incurable / terminal |
| Observation
Observation |
| Obstetrik
Obstetrics |
| Obstetriker
Obstetrician |
| Obstipation (se förstoppning) |
| Odontologisk avdelning
Department of diseases of the teeth |
| ofarlig
harmless |
| ofruktbar
infertile |
| ofta
often |
| Oftalmologi
Ophthalmology |
| oförenlig
incompatible |
| ogiftig
non-toxic |
| ohygienisk
unhygienic |
| okbåge / okbensbåge
malar arch |
| oklart / otydligt
unclear |
| okontrollerad
uncontrollable |
| oktober
october |
| okänd anledning
unknown cause |
| okänslig
insensitive |
| Oliguri
Oliguria |
| Ollon
Glans |
| Olycka
Accident |
| olycksfall
casualty / accident |
| Olycksfallsavdelning
Casualty ward |
| Olyckshändelse
accident |
| ombud
representative |
| omedelbar
immediate |
| Omedelbart
Straight away / immediately |
| omedveten
unaware |
| Omgivningen
Surroundings |
| Omhändertagande
take care of |