| Symantec | Symantec |
| Symbian OS | Symbian OS |
| symbiose | symbiosis |
| symbiotique | symbiotic |
| symbole | sign |
| Symbole astronomique | Astronomical symbols |
| Symbole de Hilbert | Hilbert symbol |
| Symbole de Jacobi | Jacobi symbol |
| Symbole de Kronecker | Kronecker delta |
| Symbole de la paix | Peace symbol |
| Symbole de Legendre | Legendre symbol |
| Symbole de Levi-Civita | Levi-Civita symbol |
| Symbole de Nicée | Nicene Creed |
| Symbole de Pochhammer | Pochhammer symbol |
| Symbole de Schläfli | Schläfli symbol |
| Symbole religieux | Religious symbolism |
| Symbole vexillologique | Flag terminology |
| Symboles de Christoffel | Christoffel symbols |
| Symboles SAMPA | SAMPA chart |
| symbolique | symbolic |
| symboliquement | symbolically |
| symboliser | represent |
| symbolisme | symbolism |
| Symbolisme anarchiste | Anarchist symbolism |
| symbologie | symbology |
| Symi | Symi |
| Symmaque | Pope Symmachus |
| Symmetric multiprocessing | Symmetric multiprocessing |
| sympa | good-looking |
| Sympathicomimétique | Sympathomimetic amine |
| sympathie | affinity |
| sympathies politiques | political persuasion |
| sympathique | pleasant |
| sympathiquement | sympathetically |
| sympathisant | sympathizer |
| sympathisante | sympathizer |
| sympathiser avec | take to |
| Sympetrum | Sympetrum |
| Symphonic Suite Final Fantasy | Music of Final Fantasy I and II |
| symphonie | symphony |
| Symphonie concertante | Sinfonia concertante |
| Symphonie de Bizet | Symphony |
| Symphonie de psaumes | Symphony of Psalms |
| Symphonie en mi bémol majeur de Tchaïkovski | Symphony in E flat |
| Symphonie fantastique | Symphonie fantastique |
| Symphonie Manfred | Manfred Symphony |
| Symphonie pour orgue | Organ Symphony |
| Symphony X | Symphony X |
| Symphorine | Symphoricarpos |
| Symphyles | Symphyla |
| Symphyse pubienne | Pubic symphysis |
| Symplasme | Symplast |
| Symplocaceae | Symplocaceae |
| Symplocarpus | Eastern Skunk Cabbage |
| Symplocarpus foetidus | Eastern Skunk Cabbage |
| Symplégades | Symplegades |
| symposium | symposium |
| symptomatique | symptomatic |
| symptomatologie | semiotics |
| symptôme | symptom |
| symptôme clinique | clinical symptom |
| symptômes du manque | withdrawal symptoms |
| Sympétrum commun | Vagrant Darter |
| Sympétrum rouge sang | Ruddy Darter |
| Sympétrum strié | Common Darter |
| Symédiane | Symmedian |
| Syméon le Nouveau Théologien | Symeon the New Theologian |
| Syméon Métaphraste | Symeon Metaphrastes |
| symétrie | symmetry |
| Symétrie C | C-symmetry |
| Symétrie CP | CP-violation |
| Symétrie CPT | CPT symmetry |
| Symétrie globale | Global symmetry |
| Symétrie T | T-symmetry |
| symétrique | symmetrical |
| Syn | Syn and Anti addition |
| SYN cookie | SYN cookies |
| SYN flood | SYN flood |
| synagogue | synagogue |
| Synagogue Beth Sholom | Beth Sholom Synagogue |
| Synagogue de Cluj-Napoca | Cluj-Napoca Reformed Synagogue |
| Synagogue de Deir el Qamar | Deir el Qamar Synagogue |
| Synagogue de Doura Europos | Dura-Europos synagogue |
| Synagogue de Göteborg | Gothenburg Synagogue |
| Synagogue de la Ghriba | El Ghriba synagogue |
| Synagogue de la rue Pavée à Paris | Agoudas Hakehilos Synagogue |
| Synagogue de Larnaca | Larnaca Synagogue |
| Synagogue de Lengnau | Synagogue |
| Synagogue de Lesko | Lesko Synagogue |
| Synagogue de Stockholm | Stockholm Synagogue |
| Synagogue de Trondheim | Trondheim Synagogue |
| Synagogue de Zarzis | Zarzis Synagogue |
| Synagogue El Transito de Tolède | Synagogue of El Transito |
| Synagogue Hekhal Hanes | Hekhal Haness Synagogue |
| Synagogue hollandaise | Hollandse Synagogue |
| Synagogue Maghen Abraham | Maghen Abraham Synagogue |
| Synagogue Maghen Abraham de Beyrouth | Maghen Abraham Synagogue |
| Synagogue Maisel | Maisel Synagogue |
| Synagogue Remuh | Remuh Synagogue |
| Synagogue Santa Maria La Blanca de Tolède | Santa María la Blanca |
| Synagogue Vieille-Nouvelle | Old New Synagogue |
| synalèphe | synalepha |
| Synaphobranchidae | Cutthroat eel |
| Synapomorphie | Synapomorphy |
| synapse | synapse |
| Synapse et transmission synaptique | Chemical synapse |
| Synaptic | Synaptic Package Manager |
| Synaptomys | Bog lemming |
| Synarchie | Synarchism |
| Synaspismós | Synaspismos |
| Synbranchiformes | Synbranchiformes |
| Synchiropus splendidus | Mandarinfish |
| synchrocyclotron | synchrocyclotron |
| synchrone | synchronous |
| synchronique | synchronic |
| synchronisation | synchromesh |
| Synchronisation du temps | Time synchronization |
| synchroniser | synchronize |
