| asphalt | (noun) a dark bituminous substance found in natural beds and as residue from petroleum distillation; consists mainly of hydrocarbons | Synonyms: mineral pitch |
|---|
| (noun) mixed asphalt and crushed gravel or sand; used especially for paving but also for roofing | - |
| dysphagia | (noun) condition in which swallowing is difficult or painful | - |
|---|
| dysphasia | (noun) an impairment of language (especially speech production) that is usually due to brain damage | - |
|---|
| organophosphate | (noun) an insecticide that interferes with an insect's nervous system | - |
|---|
| orthophosphate | (noun) a salt of phosphoric acid | Synonyms: inorganic phosphate, phosphate |
|---|
| phosphatase | (noun) any of a group of enzymes that act as a catalyst in the hydrolysis of organic phosphates | - |
|---|
| phosphate | (noun) carbonated drink with fruit syrup and a little phosphoric acid | - |
|---|
| (noun) a salt of phosphoric acid | Synonyms: inorganic phosphate, orthophosphate |
| polyphosphate | (noun) a salt or ester of polyphosphoric acid | - |
|---|
| pyrophosphate | (noun) a salt or ester of pyrophosphoric acid | - |
|---|
| sphacelus | (noun) the localized death of living cells (as from infection or the interruption of blood supply) | Synonyms: gangrene, mortification, necrosis |
|---|
| (noun) necrotic tissue; a mortified or gangrenous part or mass | Synonyms: gangrene, slough |
| sphagnum | (noun) any of various pale or ashy mosses of the genus Sphagnum whose decomposed remains form peat | Synonyms: bog moss, peat moss, sphagnum moss |
|---|
| sphalerite | (noun) an ore that is the chief source of zinc; consists largely of zinc sulfide in crystalline form | Synonyms: blende, zinc blende |
|---|