a. and sb. [ad. L. lūminant-em, pres. pple. of lūmināre to LUMINATE.]

1

  A.  adj. Illuminating, luminous.

2

1891.  Ménie Muriel Dowie, Girl in Karp., xviii. 237. There would be three more hours of light … before the luminant star-freaked dark.

3

1893.  Black & White, 22 July, 100/2. His discussion is luminant only in flashes.

4

  B.  sb. An illuminant.

5

18[?].  Elect. Rev., XXIV. 334 (Cent.). Public institutions and factories are very much in favour of the new luminant.

6

1884.  Daily News, 3 Sept., 3/5. The different luminants—gas, oil, and electricity—which are being experimented with.

7