'Congratulation' definitions:

Definition of 'congratulation'

From: WordNet
noun
The act of acknowledging that someone has an occasion for celebration [syn: congratulation, felicitation]
noun
(usually plural) an expression of pleasure at the success or good fortune of another; "I sent them my sincere congratulations on their marriage" [syn: congratulation, felicitation]

Definition of 'Congratulation'

From: GCIDE
  • Congratulation \Con*grat`u*la"tion\, n. [L. congratulatio: cf. F. congratulation.] The act of congratulating; an expression of sympathetic pleasure. [1913 Webster]
  • With infinite congratulations for our safe arrival. --Dr. J. Scott. [1913 Webster]