a. and sb. [ad. L. lūminant-em, pres. pple. of lūmināre to LUMINATE.]
A. adj. Illuminating, luminous.
1891. Ménie Muriel Dowie, Girl in Karp., xviii. 237. There would be three more hours of light before the luminant star-freaked dark.
1893. Black & White, 22 July, 100/2. His discussion is luminant only in flashes.
B. sb. An illuminant.
18[?]. Elect. Rev., XXIV. 334 (Cent.). Public institutions and factories are very much in favour of the new luminant.
1884. Daily News, 3 Sept., 3/5. The different luminantsgas, oil, and electricitywhich are being experimented with.