SD card

Từ điển Oxford Advanced Learner 8th

SD card 8 [SD card] BrE [ˌes ˈdiː kɑːd] NAmE [ˌes ˈdiː kɑːrd] noun
the abbreviation for ‘secure digital card ’ (= a type of ↑memory card, used with ↑digital cameras, mobile/cell phones, music players, etc.)