- syllabic
- screen read
- scrape through
- sea_level
- Sumatran
- sinbad
- soil biology
- sternutative
- soren kierkegaard
- seanad
- sown
- subclass cirripedia
- sewer main
- sewer line
- sir john gielgud
- soi_disant
- soil analysis
- subclass archaeornithes
- spiritual jewel
- storage register
- small poison tablet
- string galvanometer
- synovial chondromatosis
- spontaneous version
- slavonia
- short code dialing
- serbia
- susan sontag
- scorpion fish
- schist
- subsisting on ill_begotten resources or on others' earnings
- smetana
- syntactical area
- siege of syracuse
- switching wave form
- symbiotic psychosis
- self education
- synchronous circuit
- synchronous data link control
- synchronous data network
- synchronus growth
- synergetic
- sycosis vulgaris
- synaptic control
- symbolic formula
- synchronous satellite
- synchronizing pilot
- synchronous line control
- sympatholytic agent
- subclass synapsida