n., pl., ter·rae (tĕr'ē).
A rough upland or mountainous region of the moon with a relatively high albedo.
[Latin, earth, land. See terrace.]
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.
