| ̷ ̷ ̷ ̷+...- noun
also chlor·sulfonic acid |klōr, -ȯr+
Etymology: chlor- + sulfonic
: a colorless fuming corrosive liquid ClSO 3 H made usually by reaction of gaseous hydrogen chloride with sulfur trioxide and used chiefly in organic synthesis (as of sulfa drugs, saccharin, and sulfonic acids)