| NOUN | substance | orthoboric acid, boric acid | a white or colorless slightly acid solid that is soluble in water and ethanol |
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| Meaning | A white or colorless slightly acid solid that is soluble in water and ethanol; used in the manufacture of glass and paper and adhesives and in detergents and as a flux in welding; also used as an antiseptic and food preservative. | |
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| Synonym | boric acid | |
| Broader | acid | Any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt |