verb ra·di·ate \ˈrā-dē-ˌāt\

: to go out in a direct line from a central point or area

: to move in a specified direction from a source

: to send out (something, such as heat or energy) in rays


Full Definition of RADIATE

intransitive verb
:  to proceed in a direct line from or toward a center
:  to send out rays :  shine brightly
a :  to issue in or as if in rays
b :  to evolve by adaptive radiation
transitive verb
:  to send out in or as if in rays
:  to spread abroad or around as if from a center

Examples of RADIATE

  1. The pain was radiating down my arm.
  2. The sun radiates heat and light.
  3. Heat radiates from the sun.

Origin of RADIATE

Latin radiatus, past participle of radiare, from radius ray
First Known Use: circa 1619

Rhymes with RADIATE

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adjective ra·di·ate \ˈrā-dē-ət, -ˌāt\

Definition of RADIATE

:  having rays or radial parts: as
a :  having ray flowers
b :  characterized by radial symmetry :  radially symmetrical
ra·di·ate·ly adverb

First Known Use of RADIATE


Other Biology Terms

autochthonous, fecund, homunculus, phylogeny, substrate
RADIATING Defined for Kids


verb ra·di·ate \ˈrā-dē-ˌāt\

Definition of RADIATE for Kids

:  to send out rays :  shine <The sun was radiating in the sky.>
:  to come forth in the form of rays <Light radiates from shining bodies.>
:  to go out in a direct line from a center <Spokes radiate from the center of the wheel.>
:  to spread around from or as if from a center <Word radiated that Royce McNabb had sent Ina-Rae Gage a valentine. — Richard Peck, A Year Down Yonder>
:  to show very clearly <She radiates confidence.>


Next Word in the Dictionary: radiatenessPrevious Word in the Dictionary: radiant yellowAll Words Near: radiate
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