myriads Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. 1 a very great or indefinitely great number of persons or things; 2 ten thousand Example Sentence There were myriads of people at the celebration. Synonyms a lot; great number; multitude Antonyms little Hear It! Say It! Write It! myriads Switch to cursive Start Share with your friends: