psychonomic Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition adjective. related to the study of mental processes and behavior. Example Sentence She is interested in psychonomic research. More Example Sentences Psychonomic principles help understand behavior. Synonyms cognitive; mental; psychological Antonyms physical; tangible Hear It! Say It! Write It! psychonomic Switch to cursive Start Share with your friends: