a. Obs. rare. [ad. L. subdiālis, f. sub- SUB- 1 a + dī(v)um sky; cf. sub dio s.v. ǁ SUB.] Being in the open air, or under the open sky.
1647. N. Bacon, Disc. Govt. Eng., I. iv. (1739), 10. The Athenian Heliastick or Subdial Court.
1656. Blount, Glossogr., Subdial, abroad in the Air, without the house, all open.
