v. i.

  1. To emit rays; to be radiant; to shine.
  2. To proceed in direct lines from a point or surface; to issue in rays, as light or heat.

v. t.

  1. To emit or send out in direct lines from a point or points; as, to radiate heat.
  2. To enlighten; to illuminate; to shed light or brightness on; to irradiate.


  1. Having rays or parts diverging from a center; radiated; as, a radiate crystal.
  2. Having in a capitulum large ray florets which are unlike the disk florets, as in the aster, daisy, etc.
  3. Belonging to the Radiata.


  1. One of the Radiata.