SD 《略》 Diploma in Statistics; L. Scientiae Doctor (＝Doctor of Science); 【海上保険】 sea damaged; Senior Deacon; service dress; sight draft; South Dakota; special delivery; special duty; stage direction; standard deviation; standard displacement; State Department; 【軍事】 submarine detector; supply department; supply depot; 【自動車国籍表示】 Swaziland.