GNU Collaborative International Dictionary of English

Found one definition

1.       
   Depreciation , n. [Cf. F. dépréciation.]
   The act of lessening, or seeking to lessen, price, value, or reputation.
   1913 Webster
   The falling of value; reduction of worth.
   Burke.
   
   1913 Webster
   the state of being depreciated.
   1913 Webster