amperes Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a unit of electrical current that refers to the quantity of current that passes through a resistor of one ohm; abbr. A; amp Example Sentence The electric lamp was 75 amperes. Synonyms a unit of electrical current; abbr. A; amp Antonyms unit of water Hear It! Say It! Write It! amperes Switch to cursive Start Share with your friends: