time zone Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a region of the earth that has the same standard time. Example Sentence Natalie lives in the central time zone of the United States. More Example Sentences Each time zone has its own clock. Synonyms region; area; locality Antonyms space Hear It! Say It! Write It! time zone Switch to cursive Start Share with your friends: