•
SST (Menter’s Shear Stress Transport), a model used in fluid dynamics • Solid-state Technology deployed in every
Solid-state battery •
Salt spray test, a method of measuring corrosion resistance of materials and surface coatings •
Sea surface temperature •
Sea surface topography •
Serum-separating tube, used in venipuncture •
Socioemotional selectivity theory, a life-span theory of motivation •
Solid-state transformer, a type of transformer •
Somatostatin, a peptide hormone •
Stainless steel (a symbol for stainless steel on engineering drawings as per Y14.38–2007) •
Steady state topography, a research methodology in cognitive neuroscience and neuromarketing •
Super Sound Tracing, a demodulation technique for FM tuners by Sony •
Total sum of squares, in statistics • Small Sugary Treat, a liquid form of
Sucrose used in behavioural studies of animals
Computing •
Single Stream Transport, used by DisplayPort •
Structured Stream Transport, MIT data transport protocol
Telescopes •
Solar Submillimeter Telescope, located in the "El Leoncito" Astronomical Complex •
Space Surveillance Telescope, a military telescope located at Exmouth, Western Australia. •
Spitzer Space Telescope, NASA infrared space observatory •
Swedish Solar Telescope ==Time==