phospho

https://doi.org/10.1351/goldbook.P04557
  1. A prefix used in biochemical nomenclature in place of phosphono to denote the –P(=O)(OH)2 group linked to a heteroatom, e.g. 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 (https://doi.org/10.1351/pac199567081307)
White Book, 2nd ed., p. 256 (https://iupac.qmul.ac.uk/bibliog/white.html)