| STO | an indifference to pleasure or pain |
|---|---|
| STO | the philosophical system of the Stoics following the teachings of the ancient Greek philosopher Zeno |
| STO | stir up or tend |
| STO | (nautical) chamber or compartment in which the furnaces of a ship are stoked or fired |
| STO | (nautical) chamber or compartment in which the furnaces of a ship are stoked or fired |
| STO | a mechanical device for stoking a furnace |
| STO | a laborer who tends fires (as on a coal-fired train or steamship) |
| STO | Irish writer of the horror novel about Dracula (1847-1912) |
| STO | erect perennial of southeastern United States having large heads of usually blue flowers |
| STO | recurrent sudden attacks of unconsciousness caused by impaired conduction of the impulse that regulates the heartbeat |
| STO | 1 species: stokes' aster |
| STO | erect perennial of southeastern United States having large heads of usually blue flowers |