radical

(rad′ĭ-kăl)

To hear audio pronunciation of this topic, purchase a subscription or log in.

[L. radicalis, having roots]

1. In chemistry, a group of atoms acting as a single unit, passing without change from one compound to another, but unable to exist in a free state.
2. Pert. to surgery or other therapy to remove or destroy all disease or diseased tissue.
SEE: conservative; SEE: radical treatment

There's more to see -- the rest of this topic is available only to subscribers.