sedan chair UK /sɪˈdan tʃɛː/US /səˈdæn ˌtʃɛər/ noun2 •An equivalent mode of transport created by two people grasping each other's forearms, making a seat for the rider. •(historical) An open or enclosed chair raised on poles and carried by people or animals, used as a mode of transport. formssedan chairs · sedan-chairs