When something radiates, it sends out waves or rays. The sun radiates light and warmth.

If your house has a radiator, that might help you remember this word, because the radiator radiates warmth. Radiating is a concept that applies to anything that emits rays or waves. People camping make a fire so it can radiate light and heat. Our bodies radiate some heat, but not nearly as much as something as hot as a stove. If a nuclear reactor is damaged, it could radiate dangerous nuclear energy — or radiation.

Definitions of radiate
  1. verb
    send out rays or waves
    “The sun radiates heat”
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    type of:
    emit, give off, give out
    give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.
  2. verb
    send out real or metaphoric rays
    “She radiates happiness”
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    type of:
    breathe, emit, pass off
    expel (gases or odors)
  3. verb
    cause to be seen by emitting light as if in rays
    “The sun is radiating
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    blink, flash, twinkle, wink, winkle
    gleam or glow intermittently
    gleam, glimmer
    shine brightly, like a star or a light
    emit a steady even light without flames
    flick, flicker
    flash intermittently
    exhibit or undergo fluorescence
    glow or cause to glow with warm color or light
    type of:
    cause to be perceived
    have perceptible qualities
  4. verb
    issue or emerge in rays or waves
    “Heat radiated from the metal box”
  5. verb
    extend or spread outward from a center or focus or inward towards a center
    “spokes radiate from the hub of the wheel”
    synonyms: ray
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    type of:
    extend, go, lead, pass, run
    stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point
  6. adjective
    arranged like rays or radii; radiating from a common center
    synonyms: radial, stellate
    symmetric, symmetrical
    having similarity in size, shape, and relative position of corresponding parts
  7. adjective
    having rays or ray-like parts as in the flower heads of daisies
    composed of more than one part
  8. verb
    have a complexion with a strong bright color, such as red or pink
    synonyms: beam, glow, shine
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    type of:
    appear, look, seem
    give a certain impression or have a certain outward aspect
  9. verb
    experience a feeling of well-being or happiness, as from good health or an intense emotion
    “Her face radiated with happiness”
    synonyms: beam, glow, shine
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    type of:
    experience, feel
    undergo an emotional sensation or be in a particular state of mind
  10. verb
    spread into new habitats and produce variety or variegate
    synonyms: diversify
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    type of:
    alter, change, vary
    become different in some particular way, without permanently losing one's or its former characteristics or essence
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