Definition of "fluoresce"

fluoresce

/fləˈɹɛs/

verb
third-person singular simple present fluoresces, present participle fluorescing, simple past and past participle fluoresced
1. (intransitive, physics) To emit electromagnetic radiation, especially visible light, when absorbing radiation of some other wavelength.
  Quotations
  The blinding light did not hurt, it filled him, he glowed, all his veins fluoresced, each one alive with new growth.
  1974, John Boorman, Zardoz, London: Pan Books, page 98
2. (intransitive) Of colours, to be very bright; to be so bright as to appear to radiate as a light source.