ribonucleotide reductase inhibitorListen to pronunciation(RY-boh-NOO-klee-oh-tide ree-DUK-tays in-HIH-bih-ter)A family of anticancer drugs that interfere with the growth of tumor cells by blocking the formation of deoxyribonucleotides (building blocks of DNA).Search NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#