(idiomatic, humorous, slang) To be annoyed or irritable, or to behave in an ill-mannered way, particularly in the morning.

(medicine, dermatology) Diffuse hair loss of the scalp, caused by administration of various types of drugs, particularly chemotherapy.

(medicine, computing) Informatics as applied to medicine: the application of information science and information technology to medical care and any other health care.

plural of medical center

(chiefly US, geography) A (usually rural) region whose population has inadequate access to healthcare.

plural of medical desert