(n)the proportional limitation of production or distribution of something (e.g. crude oil or natural gas) to some fractional part of the total capacity of each producer
The Collaborative International Dictionary of English (GCIDE) v.0.53Collaborative International Dictionary (GCIDE)
v. t. [ imp. & p. p. Prorated; p. pr. & vb. n. Prorating. ] [ From L. pro rata (sc. parte) according to a certain part, in proportion. ] To divide or distribute proportionally; to assess pro rata. [ U.S. ] [ 1913 Webster ]