phospho

https://doi.org/10.1351/goldbook.P04557
  1. A prefix used in biochemical nomenclature in place of phosphono to denote the $\ce{-P(=O)(OH)2}$ group linked to a heteroatom, e.g. $\ce{Me3N^{+}-CH2CH2–OP(=O)(OH)O^{-}}$ phosphocholine.
  2. An infix used in biochemical nomenclature to name phosphoric diesters, e.g. glycerophosphocholine.
Sources:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1358 [Terms] [Paper]
White Book, 2nd ed., p. 256 [Terms] [Book]