supplicamentum

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

supplĭcāmentum (subpl-), i, n. [supplico],

a public prayer , religious ceremony (syn. supplicatio; post-class.), Ap. Met. 11, 20, 16; 11, 22, 9; Arn. 7, 285 (7, 21 Orell.).