Source : Webster's Revised Unabridged Dictionary (1913)

Exclaim \Ex*claim"\, v. t. & i. [imp. & p. p. {Exclaimed}; p.
   pr. & vb. n. {Exclaiming}.] [L. exclamare, exclamatum; ex +
   clamare to cry out; cf. OF. exclamer. See {Clam}.]
   To cry out from earnestness or passion; to utter with
   vehemence; to call out or declare loudly; to protest
   vehemently; to vociferate; to shout; as, to exclaim against
   oppression with wonder or astonishment; ``The field is won!''
   he exclaimed.