deoxyribonucleic UK /di.ɒk.sɪˌɹaɪ.bəʊ.njuːˈkleɪ.ɪk/US /di.ɑk.siˌɹaɪ.boʊ.nuˈkleɪ.ɪk/ adjective1 •Of or pertaining to deoxyribonucleic acid (DNA) or its derivatives.