radical rad·i·cal (rād'ĭ-kəl)
A group of elements or atoms usually passing intact from one compound to another but generally incapable of prolonged existence in a free state.
A free radical.
Of or being medical treatment by extreme, drastic, or innovative measures.
Designed to act on or eliminate the root or cause of a pathological process.
Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.