subitize Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to perceive and recognize the number of items quickly. Example Sentence Pedro tried to subitize how many stars were in the sky. More Example Sentences Children learn to subitize by playing games. Synonyms count; recognize; perceive Hear It! Say It! Write It! subitize Switch to cursive Start Share with your friends: