n.
The special atmosphere or mood created by a particular environment: "The noir ambience is dominated by low-key lighting . . . and deep shadows, creating feelings of disorientation, loneliness and entrapment" (UCLA Film/TV Archive).
[French, from ambiant, surrounding, from Latin ambiēns, ambient-. See ambient.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.