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Definition of ray:

  1. A line of light or heat proceeding from a radiant or reflecting point; a single element of light or heat propagated continuously; as, a solar ray; a polarized ray.
  2. A radiating part of a flower or plant; the marginal florets of a compound flower, as an aster or a sunflower; one of the pedicels of an umbel or other circular flower cluster; radius. See Radius.
  3. Any one of numerous elasmobranch fishes of the order Raiae, including the skates, torpedoes, sawfishes, etc.
  4. Array; order; arrangement; dress.
  5. In a restricted sense, any of the broad, flat, narrow- tailed species, as the skates and sting rays. See Skate.
  6. One of a number of lines or parts diverging from a common point or center, like the radii of a circle; as, a star of six rays.
  7. One of a system of diverging lines passing through a point, and regarded as extending indefinitely in both directions. See Half- ray.
  8. One of the component elements of the total radiation from a body; any definite or limited portion of the spectrum; as, the red ray; the violet ray. See Illust. under Light.
  9. One of the radiating spines, or cartilages, supporting the fins of fishes.
  10. One of the spheromeres of a radiate, especially one of the arms of a starfish or an ophiuran.
  11. Sight; perception; vision; - from an old theory of vision, that sight was something which proceeded from the eye to the object seen.
  12. To array.
  13. To mark with long lines; to streak.
  14. To mark, stain, or soil; to streak; to defile.
  15. To send forth or shoot out; to cause to shine out; as, to ray smiles.
  16. To shine, as with rays.


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