Ma'anar ƙamus na Messenger RNA (mRNA) wani nau'in kwayoyin halitta ne na RNA wanda ke ɗaukar bayanan kwayoyin halitta daga DNA a cikin kwayar tantanin halitta zuwa ribosome, inda yake aiki azaman samfuri don haɗin furotin. A wasu kalmomi, mRNA yana da alhakin fassara lambar ƙirar halitta da aka adana a cikin DNA zuwa jerin amino acid na sunadaran, waɗanda suke da mahimmanci don aiki na sel da kwayoyin halitta. mRNA kwayar halitta ce mai dunƙule guda ɗaya wacce ta ƙunshi nucleotides waɗanda ke da alaƙa da jerin DNA waɗanda ke ɓoye shi.