| chlorine dioxide | |
noun | |
| an explosive gas (ClO2) used chiefly in bleaching paper or starch or soap or flour and in water purification |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| a fool or simpleton; ninny. |