- Saber... to Salicylism...
- Salivary... to Saponification...
- Sapremia... to Scaglietti...
- Scald... to Schilder...
- Schilling... to Schneider...
- Schneiderian... to Sclera...
- Sclerectasia... to Scorbutus...
- Scotoma... to Seclusion...
- Seclusiveness... to Sense...
- Sensibility... to Sertoli...
- Serum... to Shield...
- Shift... to Sialadenitis...
- Sialadenosis... to Siegal...
- Siemens... to Sinuses...
- Sinusitis... to SLAP...
- Slate... to Smothering...
- Snaggle... to Soor...
- Sore... to Spells...
- Spencer... to Spider...
- Spiegler... to Splenomegaly...
- Splenopathy... to Sporadic...
- Sporotrichosis... to Stain...
- Stammering... to Steatorrhea...
- Steatosis... to Stevens...
- Stewart... to Stokes...
- Stokvis... to Streptobacillary...
- Streptobacillus... to Strongyloidiasis...
- Strongyloidosis... to Subclavian...
- Subcortical... to Subseptus...
- Subsiding... to Sumatran...
- Summer... to Surgical...
- Susceptibility... to Sydenham...
- Sylvatic... to Synechia...
- Synorchidism... to System...