IPA: /ˌɛpɪθəˈleɪmiən/
KK: /ɛpɪθəˈleɪmiən/
A song or poem that is written to celebrate a wedding or marriage.
The couple received an epithalamion as a gift from their friends, filled with beautiful verses about love and unity.
Epithalamion is derived from the Greek "epi-" (meaning upon) and "thalamos" (meaning chamber or bridal chamber). The term refers to a song or poem composed in honor of a bride and groom, typically performed at their wedding, thus celebrating their union in the bridal chamber.
Think of a song performed 'upon' ('epi-') the 'bridal chamber' ('thalamos') to remember that an epithalamion is a wedding song.