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| a compound in which oxygen is bonded to one or more electropositive atoms |
| of, pertaining to, or tending to develop into icelike crystals: glacial phosphoric acid |
surface-active agent
substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties. In the dyeing of textiles, surface-active agents help the dye penetrate the fabric evenly. They are used to disperse aqueous suspensions of insoluble dyes and perfumes.
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