略語大辞典 [C] 21 SMDS switched multimegabit data service 交換マルチメガビット データ サービス. 公衆パケット交換データ通信サービス.switched multimegabit data service; a public connectionless packet-switched data service that provides LAN(local area network)-like performance and features over a MAN(metropolitan area network) or WAN(wide area 丸善「略語大辞典」JLogosID : 11859827