The doctor said her disease was in remission with symptoms temporarily lessened.

remission 是名词，来自动词 remit（减轻、缓和），前缀 re- 表示"回、重新"，mit 表示"发送"。在医学上指疾病症状的"减轻"或"缓解期"，即病情暂时好转的状态。