orchestras Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. 1 a musical organization consisting of a group of instrumentalists including string players; 2 seating on the main floor in a theater Example Sentence The orchestras made beautiful music. Synonyms symphony; band; instrumental musical group Antonyms audience Hear It! Say It! Write It! orchestras Switch to cursive Start Share with your friends: