Cir. Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition abbreviation for circa or circle or circuit or circular or circumference Example Sentence Spell the abbreviation for circle or circa. Synonyms abbreviation for circa; abbreviation for circle; circle; circa Antonyms abbreviation for square Hear It! Say It! Write It! Cir. Switch to cursive Start Share with your friends: