Noun
(inorganic chemistry) The anion PO3F formed by replacing one hydroxyl of a phosphate anion with a fluorine atom; any salt containing such an anion
(organic chemistry) The functional group >PO3F formed by replacing one hydroxyl of a phosphate group with a fluorine atom; any compound containing such a group
Source: en.wiktionary.orgFluorophosphate esters are among the most potent neurotoxins known. Source: Internet