1640-50; < Medieval Latinmedicālis, equivalent to Latinmedic(us) medical (adj.), physician (noun) (derivative of medērī to heal; see -ic) + -ālis-al1
a specialized dictionary covering terms used in the health professions by doctors, nurses, and others involved in allied health care services. A dictionary with authoritative spellings and definitions is a particularly crucial resource in medicine, where a misspelling or misunderstanding can have unfortunate consequences for people under care. Print dictionaries in this field may be sorted alphabetically or may be categorized according to medical specializations or by the various systems in the body, as the immune system and the respiratory system. The online Medical Dictionary on Dictionary.com allows alphabetical browsing in the combined electronic versions of more than one authoritative medical reference, insuring access to correct spellings, as well as immediate, direct access to a known search term typed into the search box on the site:
A medical dictionary reveals that large numbers of medical terms are formed from the same Latin and Greek parts combined and recombined.
1646, from Fr. médical, from L.L. medicalis "of a physician," from L. medicus "physician" (n.); "healing" (adj.), from mederi "to heal," originally "know the best course for," from PIE base *med- "to measure, limit, consider, advise" (cf. Gk. medos "counsel, plan, device, cunning," Avestan vi-mad "physician"); see meditation.