1. Bright; clear; unabscured; as, a serene sky. The moon serene in glory mounts the sky. (pope) Full many a gem of purest ray serene The dark unfathomed caves of ocean bear. (gray)
2. Calm; placid; undisturbed; unruffled; as, a serene aspect; a serene soul.
In several countries of Europe, Serene is given as a tittle to princes and the members of their families; as, His Serene Highness. Drop serene.
(Science: medicine) See amaurosis.
Origin: L. Serenus to grow dry, Gr. Hot, scorching.