Ambient

Am"bi*ent, n. Something that surrounds or invests; as, air . . . being a perpetual ambient. Sir H. Wotton.

Am"bi*ent (?), a. [L. ambiens, p. pr. of ambire to go around; amb- + ire to go.] Encompassing on all sides; circumfused; investing. "Ambient air." Milton. "Ambient clouds." Pope.