• radiant

    When an object is radiant, it is shining and bright with light.

  • radar

    measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects

  • radial

    relating to or near the radius

  • radiance

    the amount of electromagnetic radiation leaving or arriving at a point on a surface

  • radiate

    arranged like rays or radii

  • radiation

    energy that is radiated or transmitted in the form of rays or waves or particles

  • radiator

    any object that radiates energy

  • radio

    indicating radiation or radioactivity

  • radioactive

    exhibiting or caused by radioactivity

  • radioactivity

    the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

  • radiocarbon

    a radioactive isotope of carbon

  • radiography

    the process of making a radiograph

  • radiologist

    a medical specialist who uses radioactive substances and X-rays in the treatment of disease

  • radiology

    the branch of medical science dealing with the medical use of X-rays or other penetrating radiation

  • radius

    the length of a line segment between the center and circumference of a circle or sphere

  • irradiate

    give spiritual insight to

  • ray

    emit as rays

  • rayon

    a synthetic silklike fabric

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