Lewis & Short

sŭper-sisto, stĭti, 3, v. a., to place one’s self upon or over, to stand upon or over (post-class.): tribunal ligneum, App. M. 11, p. 269, 9: sicarium, id. ib. 8, p. 206, 20: caeremoniali scientiae, Amm. 29, 1, 31.