Wiktionary
thiophosphate
n. (context chemistry English) Any compound formally derived from a phosphate by replacing one or more oxygen atoms with sulfur
Wikipedia
Thiophosphate
For the thiophosphate esters see organothiophosphates.
Thiophosphates (or phosphorothioates, PS) are chemical compounds and anions with the general chemical formula PSO (x = 0, 1, 2, or 3) and related derivatives where organic groups are attached to one or more O or S. Thiophosphates feature tetrahedral phosphorus(V) centers.