| synchromesh | synchronisation |
| Synchrone Digitale Hiërarchie | SONET |
| Synchroniciteit | Synchronicité |
| Synchronisatiehoogte | Rotation synchrone |
| synchronisatiering | synchronisation |
| synchronisatiering in de versnellingsbak | synchronisation |
| synchroniseren | synchroniser |
| synchroon | bien synchronisé |
| synchroonzwemmen | nage synchronisée |
| Synchroonzwemmen op de Olympische Zomerspelen | Natation synchronisée aux jeux Olympiques |
| Synchrotronstraling | Rayonnement synchrotron |
| syncline | synclinal |
| syncope | syncope |
| syncoperen | syncoper |
| syndicaat | syndicat |
| syndicalisme | syndicalisme |
| syndroom | syndrome |
| Syndroom van Alport | Néphropathies par anomalie du collagène IV |
| Syndroom van Bloom | Syndrome de Bloom |
| Syndroom van Charles Bonnet | Syndrome de Charles Bonnet |
| Syndroom van Churg-Strauss | Syndrome de Churg-Strauss |
| Syndroom van Conn | Syndrome de Conn |
| Syndroom van Cornelia de Lange | Syndrome de Cornelia de Lange |
| Syndroom van Cotard | Syndrome de Cotard |
| Syndroom van Crouzon | Syndrome de Crouzon |
| Syndroom van Cushing | Syndrome de Cushing |
| syndroom van Down | mongolisme |
| Syndroom van Gilbert | Syndrome de Gilbert |
| syndroom van Gilles de la Tourette | syndrome de la Tourette |
| syndroom van Guillain-Barré | syndrome de Guillain-Barré |
| Syndroom van Kallmann | Syndrome de Kallmann |
| Syndroom van Klinefelter | Maladie de Klinefelter |
| Syndroom van Klippel-Trenaunay | Syndrome de Klippel-Trenaunay |
| Syndroom van Korsakov | Syndrome de Korsakoff |
| Syndroom van Laurence-Moon-Bardet-Biedl | Syndrome de Bardet-Biedl |
| Syndroom van Marfan | Syndrome de Marfan |
| Syndroom van Mayer-Rokitansky-Küster | Syndrome de Rokitansky-Küster-Hauser |
| Syndroom van Moebius | Syndrome de Möbius |
| Syndroom van Noonan | Syndrome de Noonan |
| Syndroom van Peutz-Jeghers | Syndrome de Peutz-Jeghers |
| Syndroom van Pfeiffer | Syndrome de Pfeiffer |
| Syndroom van Prader-Willi | Syndrome de Prader-Willi |
| Syndroom van Reiter | Syndrome oculo-uréthro-synovial |
| Syndroom van Rett | Syndrome de Rett |
| Syndroom van Reye | Syndrome de Reye |
| Syndroom van Sotos | Syndrome de Sotos |
| Syndroom van Sturge-Weber | Syndrome de Sturge-Weber |
| Syndroom van Tietze | Syndrome de Tietze |
| Syndroom van Turner | Syndrome de Turner |
| Syndroom van Waardenburg | Syndrome de Waardenburg |
| Syndroom van Wallenberg | Syndrome de Wallenberg |
| Syndroom van Wernicke | Syndrome de Wernicke-Korsakoff |
| synecdoche | synecdoque |
| synergie | synergie |
| Synesius van Cyrene | Synésios de Cyrène |
| Synesthesie | Synesthésie |
| Syngman Rhee | Syngman Rhee |
| synode | synode |
| Synode van Clermont | Conciles de Clermont |
| Synode van Dordrecht | Synode de Dordrecht |
| Synode van Whitby | Concile de Whitby |
| synoniem | synonyme |
