nucleotidyltransferase nu·cle·o·ti·dyl·trans·fer·ase (nōō'klē-ə-tīd'l-trāns'fə-rās', -rāz', nyōō'-)
n.
Any of various enzymes that catalyze the transfer of nucleotide residues from nucleoside diphosphates or triphosphates into dimer or polymer forms.