プログレッシブ和英中辞典(第4版)の解説
せいよう【静養】
(a) rest；〔病後の〕recuperation (after an illness)
静養する take a rest
３か月静養が必要です
You need three months of quiet rest.
彼は病後の自宅静養中である
He is resting [convalescing] at home after his illness.
箱根に静養に行った
He went to Hakone 「for his health [to recuperate].