1

rad

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noun \ˈrad\

Definition of rad

  1. :  a unit of absorbed dose of ionizing radiation equal to an energy of 100 ergs per gram of irradiated material

Origin and Etymology of rad

radiation absorbed dose


First Known Use: circa 1953


2

rad

adjective

Definition of rad

slang

  1. :  cool 7, radical

1982

First Known Use of rad

1982


3

rad

abbreviation

Definition of rad

  1. 1 radian

  2. 2 radius

  3. 3 radix


RAD Defined for English Language Learners


2

rad

adjective

Definition of rad for English Language Learners

  • : very appealing or good


Medical Dictionary

rad

play
noun \ˈrad\

Medical Definition of rad

  1. :  a unit of absorbed dose of ionizing radiation equal to an energy of 100 ergs per gram of irradiated material


rad

abbreviation

Medical Definition of rad

  1. root—used in writing prescriptions

Origin and Etymology of rad

Latin radix



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