dɪˌpɹiːʃɪˈeɪʃən ˌdɛɹəˈɡeɪʃən ˈwɛəɹ ən ˈtɛəɹ a decrease in price or value depreciation of the dollar against the yen a communication that belittles somebody or something decrease in value of an asset due to obsolescence or use