Library / English Dictionary

    RAD

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    The unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)play

    Synonyms:

    rad; radian

    Classified under:

    Nouns denoting quantities and units of measure

    Hypernyms ("rad" is a kind of...):

    angular unit (a unit of measurement for angles)

    Meronyms (parts of "rad"):

    milliradian (a unit of angular distance equal to one thousandth of a radian)

    Sense 2

    Meaning:

    A unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated materialplay

    Classified under:

    Nouns denoting quantities and units of measure

    Hypernyms ("rad" is a kind of...):

    radioactivity unit (a measure of radioactivity)

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