[f. L. lūc(i)-, lūx light + -GEN.] An illuminant produced by burning a spray of oil mixed with air.
1887. Pall Mall G., 16 Sept., 12. Lucigen, as the new illuminant is called, is the invention of Mr. Hannay, of Glasgow, and is already extensively used in large engineering works, and for lighting large open spaces. Ibid. (1892), 26 Jan., 5/2. It is proposed to make experiments at the Woolwich Ferry with the lucigen light.
