sulfuric acid Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a strong, corrosive acid made of sulfur, oxygen, and hydrogen Example Sentence Sulfuric acid is a highly corrosive substance commonly used in industrial processes. Synonyms battery acid; oil of vitriol; vitriol Antonyms base; alkali Hear It! Say It! Write It! sulfuric acid Switch to cursive Start Share with your friends: