lab apron Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a garment worn over the front of the body that protects your body and clothing from harmful substances while working in the laboratory Example Sentence She put on her lab apron before beginning the experiment. Synonyms lab coat; laboratory apron; laboratory coat Antonyms shoes Hear It! Say It! Write It! lab apron Switch to cursive Start Share with your friends: