| SYMBOLES | A | B | C | D | E | F | G | H | I | J | K | L | M |
| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Les sigles courants, et les sigles désuets des 50 dernières années. | Current abbreviations, and obsolete abbreviations from the last 50 years. |
J :
| J | jaundice |
| joule | |
| JACCOL | jaundice, anaemia, cyanosis, clubbing, oedema, lymphadenopathy |
| jga | juxtoglomerular apparatus |
| jn | junction |
| JND | just noticeable difference |
| JPK | just plain knackered |
| JPN | just plain nuts |
| JRA | juvenile rheumatoid arthritis |
| JSA | Jobseeker’s Allowance |
| jt | joint |
| JV | jugular vein |
| JVD | jugular venous distension |
| JVP | jugular venous pressure |
| jugular venous pulse | |
| jx | junction |
K :
| K | kidney |
| knee | |
| knee jerk reflex | |
| potassium | |
| potassium sérique | |
| vitamine K | |
| K+ | potassium |
| KDA | known drug allergies |
| kg | kilogram |
| kHz | kilohertz |
| kJ | kilojoule |
| KJ | knee jerk |
| KJ+ | knee jerk reflex present |
| KJ- | knee jerk reflex absent |
| KK | kidneys palpable |
| KKLS | kidneys, liver, spleen palpable |
| KMV | killed measles vaccine |
| KO | keep open |
| keep on | |
| knocked out | |
| KOC | cathodal opening contraction |
| KOd | knocked out |
| KP | keratic precipitates |
| kPa | kilopascal |
| KPTT | kaolin partial thromboplastin time |
| KS | Kaposi's sarcoma |
| KT | kidney transplant |
| KTx | kidney transplant |
| KSD | kidney stone disease |
| KUB | kidneys, ureters, bladder [radiographie] |
| KVO | keep vein open [tube i.v.] |
| K-wire | Kirschner wire |
| Kx | treatment |
| KY | K-Y Jelly™ [lubrifiant à base d'eau] |