kerion Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. ringworm infection of the hair follicles of the scalp and beard that usually results in a swelling that is covered with pustules and oozes fluid Example Sentence He suffers from kerion and has a swelling. Synonyms ringworm infection; roundworm; tinea Antonyms healthy follicles Hear It! Say It! Write It! kerion Switch to cursive Start Share with your friends: