any of several sugars C?H??O? having one of the alcoholic hydroxyl groups of ribose replaced by hydrogen; esp: a sugar H0CH2 (CH0H)2 CH2CH0 that is a constituent of nucleic acids, C?H??O?, pentoos, mille molekulis teise süsinikuaatomi juures ei ole hapnikuaatomit. Desoksüriboos on vees lahustuv magusa maitsega kristalne aine, desoksüribonukleiinhappe (DNA) koostisosa.
