DEXTR- Meaning of DEXTR- in English [dextr-] or dextro- comb form [L dextr-, dexter] 1: right: on or toward the right "dextrorotatory" 2. usu dextro-: dextrorotatory "dextroamphetamine" Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012