Entry 1 sense Webster, 1913 Sublunar · Sub·lu·nar · IPA 01 a. Situated beneath the moon; hence, of or pertaining to this world; terrestrial; earthly. 1. Situated beneath the moon; hence, of or pertaining to this world; terrestrial; earthly. “All things sublunary are subject to change.” — Dryden. “All sublunary comforts imitate the changeableness, as well as feel the influence, of the planet they are under.” — South.