reradiate

verb

hit with radiation again
emit or project, again

Wiktionary

verb

Etymology: Etymology tree Proto-Italic *wre- Latin re-der. Old French re-bor. Middle English re- English re- English radiate English reradiate From re- + radiate.

To absorb some amount of radiative energy, and then later emit that energy in the form of radiative energy. The term is most often used in discussion of absorption of light or infrared radiation.