American Dictionary of the English Language

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RA'DIATE, verb intransitive [Latin radio. See Ray.]

1. To issue in rays, as light; to dart, as beams of brightness; to shine.

Light radiates from luminous bodies directly to our eyes.

2. To issue and proceed in direct lines from a point.

RA'DIATE, verb transitive To enlighten; to illuminate; to shed light or brightness on. [Usually irradiate.]

RA'DIATE, adjective In botany, a rayed or radiate corol or flower, is a compound flower consisting of a disk, in which the corollets or florets are tubular and regular, and of a ray, in which the florets are irregular.

Or a flower with several semiflosculous florets set round a disk in form of a radiant star.