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radar gun
radar screen
radar trap
radarscope
Radcliff
raddle (1)
raddle (2)
raddled
radial
radial drilling machine
radial engine
radial keratotomy
radial-ply
radial symmetry
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radian
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rad (1)

rad [ rad ] (plural rads)


noun 
Definition:
 
former unit of radiation absorption: the unit formerly used to measure the level of ionizing radiation absorbed by something, equal to 0.01 joule per kilogram of irradiated material

[Early 20th century. Acronym <radiation absorbed dose]
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