Definition of radiate in English:

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Pronunciation: /ˈreɪdɪeɪt/
1 [with object] Emit (energy, especially light or heat) in the form of rays or waves: the hot stars radiate energy
More example sentences
  • At each groove, plasmons scatter and radiate some light, while some plasmon energy remains to travel to the next groove.
  • Why is that electrons radiate electromagnetic energy when they are accelerated?
  • If a particle moves faster than the speed of light, it must create a shockwave, and radiate energy.
emit, give off/out, send out/forth, discharge, scatter, diffuse;
1.1 [no object, with adverbial of direction] (Of light, heat, or other energy) be emitted in the form of rays or waves: the continual stream of energy which radiates from the sun
More example sentences
  • In excited atoms, energy radiated as photons eventually leaks into the vast interstellar spaces and redshifts away.
  • The air in the field became warm and comforting, the light becoming so bright that you could feel the heat radiating.
  • Even though it was around five in the afternoon, heat was still radiating off the pavement and by the time I got home about ten minutes later, I was already drenched in sweat.
shine, be diffused, beam, emanate
1.2(Of a person) clearly emanate (a strong feeling or quality) through their expression or bearing: she lifted her chin, radiating defiance
More example sentences
  • Greg never could put his finger on it, but she just radiated a good feeling and friendship when she was near.
  • Helen simply radiates happiness and there is a great sense of satisfaction and self-ease about her.
  • He was red in the face and he was practically radiating anger and hurt.
display, show, exhibit, demonstrate;
transmit, emanate, breathe, be a/the picture of
1.3 (radiate from) (Of a feeling or quality) emanate clearly from: leadership and confidence radiate from her
More example sentences
  • There was a reassuring air about him, a comforting quality that he seemed to radiate from within.
  • She was quiet, the depression and despair radiating from her body in a way that was painful just to be near.
  • He has continued to press calmly forward despite almost deranged hatred radiating from enemies.
2 [no object, with adverbial of direction] Diverge or spread from or as if from a central point: he ran down one of the passages that radiated from the room
More example sentences
  • The volumes are arranged in a vaguely cruciform plan, with wings radiating out from a central core.
  • I was back recently to the Round Room under the heavy drum of the central rotunda from which the Four Courts radiate.
  • The building has an original design, with a central administrative section, and radiating out from this, the elementary school building, the high-school building and the gym.
spread out, fan (out), ray (out), branch (out/off), diverge, extend, separate, split off, issue
technical divaricate, ramify
2.1 (as adjective radiated) Used in names of animals with markings arranged like rays, e.g. radiated tortoise.
2.2 Biology (Of an animal or plant group) evolve into a variety of forms adapted to new ways of life.
Example sentences
  • During this time, the mammals radiated and evolved, but they could not make the breakthrough to becoming large or to diversifying their modes of like.
  • From there, the species has radiated into several subspecies, two of which occur in Europe and share a hybrid zone.
  • In any case, these animals quickly radiated into an extraordinary variety of large and small terrestrial herbivores and carnivores.


Pronunciation: /ˈreɪdɪət/
Arranged in or having a radial pattern: the radiate crown
More example sentences
  • The flowers of the outer whorl of the head generally have five elongated petals united to form straplike structures and are restricted to the periphery of the radiate head.
  • Cronos glared up into the tree of life's radiate rainbow colored leaves.



Pronunciation: /ˈreɪdɪətɪv/
sense 1 of the verb.
Example sentences
  • Because its application does not require any model calculations of atmospheric radiative transfer, it is computationally fast and can, thus, be efficiently applied to calculate UV irradiation across a grid-point net.
  • Most commonly, this necessary absorption and radiative dispersal of heat is handled by a heatsink & fan, used in conjunction with a thin layer of thermal compound.
  • Due to the near-field nature of the coupling, signals can be guided around 90° corners and split via tee structures without radiative losses into the far field at the discontinuity.


Pronunciation: /-ətli/


Early 17th century: from Latin radiat- 'emitted in rays', from the verb radiare, from radius 'ray, spoke'.

Words that rhyme with radiate


For editors and proofreaders

Line breaks: ra¦di|ate

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