n.
Loss or lack of bodily strength; weakness; debility.
[New Latin, from Greek astheneia, from asthenēs, weak : a-, without; see a-1 + sthenos, strength.]
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.