deoxy-

1. a combining form meaning “deoxygenated,” used in the formation of compound words: deoxyribose.

combining form

1. indicating the presence of less oxygen than in a specified related compounddeoxyribonucleic acid

also desoxy-, prefix used to form chemical names for compounds which contain less oxygen than other compounds, from de- + first two syllables of oxygen

pref.

1. Losing one or more atoms of oxygen:deoxyadenosine.