略語大辞典 [Env] 28 RAD restricted activity day 活動制限日. restricted activity day; includes days missed from work, spent in bed, or otherwise measurably constrained; ref. MRAD(minor restricted activity days), days on which activity is reduced but not severely restricted; (US); [Env:Pub]. 丸善「略語大辞典」JLogosID : 11857349