[verb rey-dee-eyt; adjective rey-dee-it, -eyt]
See more synonyms for radiate on Thesaurus.com
verb (used without object), ra·di·at·ed, ra·di·at·ing.
  1. to extend, spread, or move like rays or radii from a center.
  2. to emit rays, as of light or heat; irradiate.
  3. to issue or proceed in rays.
  4. (of persons) to project or glow with cheerfulness, joy, etc.: She simply radiates with good humor.
verb (used with object), ra·di·at·ed, ra·di·at·ing.
  1. to emit in rays; disseminate, as from a center.
  2. (of persons) to project (joy, goodwill, etc.).
  1. radiating from a center.
  2. having rays extending from a central point or part: a coin showing a radiate head.
  3. radiating symmetrically.

Origin of radiate

First recorded in 1610–20, radiate is from the Latin word radiātus (past participle of radiāre to radiate light, shine). See radiant, -ate1
Related formsra·di·a·ble, adjectivera·di·a·bil·i·ty, ra·di·a·ble·ness, nounra·di·a·bly, ra·di·ate·ly, adverban·ti·ra·di·at·ing, adjectivein·ter·ra·di·ate, verb (used without object), in·ter·ra·di·at·ed, in·ter·ra·di·at·ing.mul·ti·ra·di·ate, adjectivemul·ti·ra·di·at·ed, adjectivenon·ra·di·at·ing, adjectivere·ra·di·ate, verb, re·ra·di·at·ed, re·ra·di·at·ing.sub·ra·di·ate, adjectiveun·ra·di·at·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for radiated

Contemporary Examples of radiated

Historical Examples of radiated

  • And he was very great and she was very fair, and there radiated from both a starry radiance.

    Doctor Pascal

    Emile Zola

  • The radiated light was so intense that it stung even his hardened skin.

    The Martian Cabal

    Roman Frederick Starzl

  • To Wilson it was as though she radiated drowsy waves of warmth.

    The Web of the Golden Spider

    Frederick Orin Bartlett

  • Lithe, full-bosomed, and ruddy, she radiated a powerful and subtle charm.

  • This conclusion brought a joy with it that radiated the honest face.

    Janet of the Dunes

    Harriet T. Comstock

British Dictionary definitions for radiated


verb (ˈreɪdɪˌeɪt)
  1. Also: eradiate to emit (heat, light, or some other form of radiation) or (of heat, light, etc) to be emitted as radiation
  2. (intr) (of lines, beams, etc) to spread out from a centre or be arranged in a radial pattern
  3. (tr) (of a person) to show (happiness, health, etc) to a great degree
adjective (ˈreɪdɪɪt, -ˌeɪt)
  1. having rays; radiating
  2. (of a capitulum) consisting of ray florets
  3. (of animals or their parts) showing radial symmetry
  4. adorned or decorated with raysa radiate head on a coin

Word Origin for radiate

C17: from Latin radiāre to emit rays
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for radiated



1610s, "spread in all directions from a point," from Latin radiatus, past participle of radiare "to beam, shine, gleam; make beaming" (see radiation). Meaning "be radiant, give off rays (of light or heat)" is from 1704. Related: Radiated; radiates; radiating.



"having rays, furnished with rays, shining," 1660s, from Latin radiatus (see radiate (v.)).

Online Etymology Dictionary, © 2010 Douglas Harper

radiated in Medicine


  1. To spread out in all directions from a center.
  2. To emit or be emitted as radiation.
Related formsradi•a′tive adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.