rad

[ɹæd]

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Definitions

In the International System of Units, the derived unit of plane angular measure of angle equal to the angle subtended at the centre of a circle by an arc of its circumference equal in length to the radius of the circle. Symbol: rad

Anything which radiates or emits rays.
A device that lowers engine coolant temperature by conducting heat to the air, through metal fins.
(of buildings) A finned metal fixture that carries hot water or steam in order to heat a room.
A type of antenna.

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Favoring fundamental change, or change at the root cause of a matter.
Example: His beliefs are radical.
Pertaining to a root (of a plant).
Pertaining to the basic or intrinsic nature of something.
Thoroughgoing; far-reaching.
Example: The spread of the cancer required radical surgery, and the entire organ was removed.
Of or pertaining to the root of a word.
(of a sound) Produced using the root of the tongue.
Involving free radicals.
Relating to a radix or mathematical root.
Example: a radical quantity; a radical sign
(1980s & 1990s) Excellent; awesome.
Example: That was a radical jump!