Etymology of the Greek word epithalamios (ἐπιθαλάμιος)
the Greek word epithalamios, ἐπιθαλάμιος
derived from the Greek word thalamos, θάλαμος, ϑάλαμος (chamber; chamber, couch; chamber)
using the Greek prefix epi-, ἐπι-
derived from the Byzantine Greek word epi, ἐπί (upon; properly, meaning superimposition (of time, place, order, etc.), as a relation of distribution (with the genitive case); over, upon, etc.; of rest (with the dative case) at, on, etc.; of direction (with the accusative case) towards, upon, etc.)