sulfuric acid Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a strong acid used in batteries and cleaning. Example Sentence Sulfuric acid is a highly corrosive substance commonly used in industrial processes. More Example Sentences It can be dangerous if not handled carefully. Synonyms battery acid; vitriol Antonyms base; alkali Hear It! Say It! Write It! sulfuric acid Switch to cursive Start Share with your friends: