| Acronym | Definition |
|---|
| SL➣Student Loan |
| SL➣Second Life (internet-based virtual world; trademark of Linden Lab) |
| SL➣St. Louis (ammunition headstamp) |
| SL➣So Long |
| SL➣Sri Lanka |
| SL➣Straight Line |
| SL➣Sign Language |
| SL➣Skill Level |
| SL➣Stop Loss |
| SL➣Sierra Leone |
| SL➣Sea Level |
| SL➣Sliding |
| SL➣Sleeve |
| SL➣Standard Level (IB course level) |
| SL➣San Luis (Argentina province) |
| SL➣Satellite(-borne) Laser |
| SL➣Special Linear (mathematics) |
| SL➣Single Line |
| SL➣Speed Limit |
| SL➣Slalom |
| SL➣Street Legal |
| SL➣Snow Leopard (computer operating system; Apple Computer, Inc.) |
| SL➣Squad Leader |
| SL➣Sleeper (Indian Railways train class) |
| SL➣Source Language (translation) |
| SL➣Shelf Life |
| SL➣Slime |
| SL➣Sick Leave |
| SL➣Slough (postcode, United Kingdom) |
| SL➣Sublingual (under the tongue) |
| SL➣Service Letter |
| SL➣Software Library |
| SL➣Service Level |
| SL➣Sendero Luminoso (Shining Path) |
| SL➣Sool (postal region, Somalia) |
| SL➣Southern League (AA Baseball Minor League) |
| SL➣Senior Level |
| SL➣Steam Locomotive |
| SL➣San Leandro (California) |
| SL➣Storstockholms Lokaltrafik (public transportation in Stockholm, Sweden) |
| SL➣Skylight |
| SL➣Slavic (linguistics) |
| SL➣Simple Life (TV show) |
| SL➣Starting Line |
| SL➣Sociedad Limitada (Spanish company designation) |
| SL➣Stage Left |
| SL➣Side Line |
| SL➣Scarlet Letter |
| SL➣Security Level |
| SL➣Service Line |
| SL➣Seismic Line |
| SL➣System Load |
| SL➣Source Level |
| SL➣Strong Link (physics) |
| SL➣Storage Location |
| SL➣Scout Leader |
| SL➣Space Lab |
| SL➣Superlattice |
| SL➣Sea Launch |
| SL➣Scan Line |
| SL➣Secret Lover |
| SL➣Securities Lending (finance) |
| SL➣Safety Level |
| SL➣Surathkal (station code, Indian Railways |
| SL➣Section Leader |
| SL➣Structural Level |
| SL➣Comet Shoemaker-Levy |
| SL➣Standard Label (tapes) |
| SL➣Security Layer (telecommunications protocol) |
| SL➣Sensitivity Level |
| SL➣Safety Limit |
| SL➣Sylvan Lake (Alberta, Canada) |
| SL➣Saccharum Lactis |
| SL➣Sonoluminescence |
| SL➣Soap Lake (Washington) |
| SL➣Small Leaf (plant physiology) |
| SL➣Side Lobe |
| SL➣Supervisory Level |
| SL➣Shift Leader |
| SL➣Switch Locator (US DoD) |
| SL➣Shared Lock |
| SL➣System Layer |
| SL➣Segment Leader |
| SL➣Star Lord (Cyberguard firewall) |
| SL➣Sand Land (Manga) |
| SL➣Shoot Length |
| SL➣Soluble Liquid |
| SL➣Sisters of Loretto (religious order) |
| SL➣Suburban Legends (band) |
| SL➣Space Laser |
| SL➣Sector Leader (Starkingdoms online game) |
| SL➣Sports Light (Mercedes) |
| SL➣Sniper Lobby (gaming) |
| SL➣Shadow Labs (World of Warcraft gaming) |
| SL➣Strictly Linear |
| SL➣Signed Log (geocaching) |
| SL➣Short Landing |
| SL➣Signal Link |
| SL➣Specification Limit |
| SL➣Stationary Low (power reactor) |
| SL➣Shadow Lords (game) |
| SL➣Sandia Laboratories |
| SL➣Salt Lake City Southern (railroad) |
| SL➣Specialised Lending |
| SL➣Sensor Link |
| SL➣Strouhal Number |
| SL➣Sound Locator |
| SL➣Summary Links (OSPF) |
| SL➣Salvage Loss |
| SL➣Shady Limited (clothing brand) |
| SL➣Shining Lore (MMORPG) |
| SL➣Synchronization Likelihood |
| SL➣Solicitor at Law |
| SL➣Sport Und Leicht (German, Mercedes-Benz SL) |
| SL➣Surface Lease (US and Canada) |
| SL➣Stockage Level |
| SL➣Strategic List |
| SL➣supplier lock |
| SL➣Segment Library |
| SL➣Symmetric Superlattice |
| SL➣Saha-Langmuir (equation) |
| SL➣Salem Technical Services |
| SL➣Strategic Locator (missing children) |
| SL➣Submarine Qualification Lapsed (US Navy) |
| SL➣Large Signal Search Light (US Navy) |
| SL➣Spontaneous Laughing |