a. [f. L. lūmin-, lūmen light + -ESCENT.] a. Emitting light, or having the property of emitting light, otherwise than as a result of incandescence. b. Pertaining to luminescence.
1889. [trans. E. Weidemann in] Philos. Mag., Ser. V. XXVIII. 155. Luminescent light is in a high degree dependent in colour and intensity upon the mode of production.
1896. S. P. Thompson, in Jrnl. Oxf. Univ. Junior Scientific Club, II. No. 40. 64. The colour emitted by the luminescent body.