split run: Meaning and Definition of

split' run'

Pronunciation: [key]
  1. a pressrun, as that of a newspaper or magazine, which is interrupted after the running of a specified number of copies to permit the substitution of type or of a cut, as in a keyed advertisement: a device for testing the relative effectiveness of different versions of an advertisement.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.