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.
phos·phatic (fŏs-fătĭk) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.