n. 1. A salt, ester, or anion of phosphoric acid, derived by removal or replacement of one, two, or especially all three of the hydrogens of phosphoric acid. 2. A fertilizer containing phosphorus compounds. 3. A soda fountain drink made by blending carbonated water with flavored syrup. [PHOSPH(O)- + -ATE2.] phos·phatic (fŏs-fătĭk) adj. |
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