Entry 2 senses · 2 variants Webster, 1913 Ambient /ăm'-bē-ənt/ · Am·bi·ent · IPA /ˈæm.bi.ənt/ a. n. 01 a. Encompassing on all sides; circumfused; investing. 1. Encompassing on all sides; circumfused; investing. 02 n. Something that surrounds or invests; as, air . . . being a perpetual ambient. 1. Something that surrounds or invests; as, air . . . being a perpetual ambient.