'Prothalamium' definitions:

Definition of 'prothalamium'

From: WordNet
noun
A song in celebration of a marriage [syn: prothalamion, prothalamium]

Definition of 'Prothalamium'

From: GCIDE
  • Prothalamion \Pro`tha*la"mi*on\, Prothalamium \Pro`tha*la"mi*um\, n. [NL., fr. Gr. ? before + ? chamber, especially, the bridal chamber.] A song in celebration of a marriage. --Drayton. [1913 Webster]