WordNet Dictionary- [n] the act of acknowledging that someone has an occasion for celebration
- [n] (usually plural) an expression of pleasure at the success or good fortune of another; "I sent them my sincere congratulations on their marriage"
Webster's 1913 Dictionary\Fe*lic`i*ta"tion\, n. [Cf. F. f['e]licitation.] The act of felicitating; a wishing of joy or happiness; congratulation.