DIOL Meaning of DIOL in English transcription, транскрипция: [ ˈdī-ˌōl, -ˌȯl ]nounEtymology: International Scientific Vocabulary Date: 1920: a compound containing two hydroxyl groups Merriam-Webster's Collegiate English vocabulary. Энциклопедический словарь английского языка Merriam Webster. 2003