uˈpaithric,a. [f.Gr. ὑπαίθρ-ος + -ic: see hypæthral a. and cf. hupaithric a.] Open to the air; having no roof; hypæthral. 1819Shelley Ess. & Lett. (1852) II. 155 Their temples were mostly upaithric; and..the stars..were seen above.1851[J. Fane]Poems Early Years 24 A vast upaithric fane.