- sodium chloride
- signify
- somebody
- some one
- someone
- spirit of turpentine
- sun god
- squid
- stomodeal depression
- sixth cranial nerve
- sixth form
- sixth former
- suppurative otitis media
- stratus
- stratum synoviale
- subperiosteal
- subendothelial
- stenopterygius quadrisicissus
- subhyoid bursitis
- sphincter pupilae
- self assembly
- salinate
- self learning process
- self employed
- simplex system
- self_compiling computer
- selective adsorption
- selective assembly
- stylopod
- seedman
- stud buck
- sufficient
- sufficiently
- stuffed vegetable
- stanchion
- shredded
- skin and bone
- swindled
- sinister
- start back
- so long
- salubrity
- shortcoming
- slip up
- shamelessness
- stigma
- shell shock
- saving grace
- savings
- seduction