(1) An aldopentose (i.e. a monosaccharide with five carbon atoms) derived from the pentose sugar ribose by the replacement of a hydroxyl group with a hydrogen atom at the 2 position, leading to the net loss of an oxygen atom (hence the name).
(2) The sugar component in the side chains of DNA, in contrast to the ribose in the side chains of RNA.
Word origin: deoxy + ribose (sugar)
Related forms: deoxyribo-
Chemical formula: C6H10O4