| barium sulphate | |
| —n | |
| Also called: blanc fixe a white insoluble fine dense powder, used as a pigment, as a filler for paper, rubber, etc, and in barium meals. Formula: BaSO4 | |
| barium sulphate | |
noun | |
| 1. | a white insoluble radiopaque powder used as a pigment |
| 2. | a white or colorless mineral (BaSO4); the main source of barium [syn: heavy spar] |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |