[f. as prec. + -IST.] A believer in cosmism; a Secularist.
1861. G. J. Holyoake, Limits of Atheism (1874), 11. It is the first instinct of the Cosmist to keep his mind open to reason.
1861. Gresley, Sophron & N., 68. The Cosmist asks for a proof of the existence of the Great Spirit; he calls on us to prove that the world is not self-existent, self-creating.
1883. Pall Mall Gaz., 23 Nov., 3/1. The prosecutor in a case of theft declined to give his evidence on oath because he was a Cosmist, which he subsequently explained meant much the same as a Secularist or an Agnostic.