This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Gradual return to health and strength after illness.

n. The period needed for returning to health after illness.

n. A gradual healing after illness or injury.

n. The period of time spent for healing.

n. The recovery of heath and strength after disease; the state of a body renewing its vigor after sickness or weakness; the time between the subsidence of a disease and complete restoration to health.

n. The gradual recovery of health and strength after sickness; renewal of health and vigor after sickness or weakness.

n. In Roman law, the establishment of a right or title by the retroactive effect of removing an original defect in its validity.

n. gradual healing (through rest) after sickness or injury

"Moreover, each several motion takes its name rather from the goal than from the starting-point of change, e.g. motion to health we call convalescence, motion to disease sickening."

convalescency   

healing   

rally    lysis   

acquiescence    adolescence    coalescence    essence    evanescence    luminescence    obsolescence    phosphorescence    quintessence    senescence   

recuperation    metamorphosis