The Collaborative International Dictionary of English v.0.48:

Eulogium \Eu*lo"gi*um\n.; pl. Eulogiums. [LL., fr. Gr. ?
   eulogy.]
   A formal eulogy. --Smollett.
   [1913 Webster]

WordNet (r) 3.0 (2006):

eulogium
    n 1: a formal expression of praise for someone who has died
         recently [syn: eulogy, eulogium]