Prorate
Pronunciation : Pro*rate"
Part of Speech : v.
Etymology : [From L. pro rata (sc. parte) according to a certain part, in proportion.]
Definition : Defn: To divide or distribute proportionally; to assess pro rata. [U.S.]
t. [imp. & p. p. Prorated; p. pr. & vb. n. Prorating.]
Source : Webster's Unabridged Dictionary, 1913