Definition of phosphoryl in English:

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Pronunciation: /ˈfɒsfərʌɪl/
Pronunciation: /ˈfɒsfərɪl/


[as modifier]
1 Chemistry Denoting the trivalent group ≡PO.
Example sentences
  • The association of the peptide amide hydrogens with the lipid phosphoryl oxygens was also investigated in order to find out if there was any possibility of long-term hydrogen bonding between these atoms.
  • This ordering can be explained by the orientational behavior of water molecules around phosphoryl groups.
  • Signal transduction by these systems usually involves autophosphorylation of a histidine kinase on a conserved histidine residue and subsequent transfer of the phosphoryl group to a conserved aspartate on a receiver domain.
1.1 Biochemistry Denoting the monovalent phosphate group —PO(OH)2.
Example sentences
  • It explains the method of claim 2 in which the monovalent group comprises a phosphoryl group.
  • In addition, monovalent cations may, along with Mg2+ ions and surrounding residues of the protein, help orient the 1-phosphoryl group so as to achieve the optimal position required for catalysis.


Late 19th century: from phosphorus + -yl.

For editors and proofreaders

Line breaks: phos|phoryl

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