uprating

1. gerundparticiplepresentpresent participle and gerund of uprate

plural upratings

1. The assignment of a higher rating.

   It is a revelation how uprating of a diesel locomotive by even 200 or 300 h.p. can affect its performance; the fact is that such uprating does not mean any addition to the h.p. output needed to move itself, so that the additional h.p. is almost entirely available at the drawbar.

   1961 June, Cecil J. Allen, “Locomotive Running Past and Present”, in Trains Illustrated, page 338

2. An upgrade.