hydroxyethane UK /haɪ̯ˌdɹɒksiˈiːθeɪ̯n/US /haɪ̯ˌdɹɑksiˈɛθeɪ̯n/ noun1 •(nonstandard) ethanolThis hydroxyethane sulfonic acid is made from sodium bisulfite and ethylene oxide, with of without pressure. — 1957