preterm Get Printable Handwriting Rhymes Hear It! Say It! Write It! Learn It! Spelling Test Definition adjective. relating to a baby born before the usual time. Example Sentence A recent study linked air pollutions levels to preterm birth rates. More Example Sentences Doctors monitor preterm infants closely. Synonyms premature; early Antonyms postterm; late Hear It! Say It! Write It! preterm Switch to cursive Start Rhymes Two Syllable Rhymes (1) preterm Share with your friends: