The Collaborative International Dictionary of English v.0.48:

Radiate \Ra"di*ate\ (r[=a]"d[i^]*[=a]t), v. i. [imp. & p. p.
   Radiated (r[=a]"d[i^]*[=a]`t[e^]d); p. pr. & vb. n.
   Radiating.] [L. radiatus, p. p. of radiare to furnish with
   spokes or rays, to radiate, fr. radius ray. See Radius,
   Ray a divergent line.]
   1. To emit rays; to be radiant; to shine.
      [1913 Webster]

            Virtues shine more clear
            In them [kings], and radiate like the sun at noon.
                                                  --Howell.
      [1913 Webster]

   2. To proceed in direct lines from a point or surface; to
      issue in rays, as light or heat.
      [1913 Webster]

            Light radiates from luminous bodies directly to our
            eyes.                                 --Locke.
      [1913 Webster]

WordNet (r) 3.0 (2006):

radiating
    adj 1: diverging from a common point

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "radiating":
   approaching, asymptotic, centripetal, centrolineal, concurrent,
   confluent, confocal, connivent, converging, focal, meeting,
   mutually approaching, radial, radiate, radiated, radiative, rayed,
   tangent, tangential, uniting