dissipates Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to disappear or scatter gradually. Example Sentence The fog dissipates in the morning. More Example Sentences Heat dissipates into the cool air. Synonyms disperses; scatters; vanishes Antonyms accumulates; gathers; collects Hear It! Say It! Write It! dissipates Switch to cursive Start Share with your friends: