| os | small tree of southern United States having panicles of dull white flowers followed by dark purple fruits |
|---|---|
| os | smelts |
| os | type genus of the Osmeridae |
| os | the common smelt of Europe |
| os | important marine and landlocked food fish of eastern North America and Alaska |
| os | a hard and corrosion resistant mineral that is a natural alloy of osmium and iridium (usually containing small amounts of rhodium and platinum) |
| os | a diuretic (trade name Osmitrol) used to promote the excretion of urine |
| os | a hard brittle blue-gray or blue-black metallic element that is one of the platinum metals |
| os | sensory end organ that responds to changes in osmotic pressure |
| os | diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal |
| os | of or relating to osmosis |
| os | (physical chemistry) the pressure exerted by a solution necessary to prevent osmosis into that solution when it is separated from the pure solvent by a semipermeable membrane |