recuperation

from The Century Dictionary.

• noun Recovery, as of something lost.
• noun Specifically, recovery of strength or health.

from the GNU version of the Collaborative International Dictionary of English.

• noun Recovery, as of anything lost, especially of the health or strength.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Gradual restoration to health; convalescence.
• noun Instance of getting something back.
• noun sociology Process by which radical or subversive ideas are co-opted by mainstream society.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun gradual healing (through rest) after sickness or injury