rolling introduction

plural rolling introductions

1. A rollout staggered in time and space.

   Through the rolling introduction of the NYSE Hybrid Market the event dates in our analysis are scattered over almost four months.

   2009, Dennis Kundisch, Daniel J. Veit, Tim Weitzel, Christoph Weinhardt, editors, Enterprise Applications and Services in the Finance Industry, Springer, →ISBN

   2 more examples

   But if that costs three quarters of a billion dollars or billion and a half dollars and you look around for the next one you are not going to do them all at once. I wouldn't say tracked air cushion vehicles will be in widespread use before the year 2000. It would be a rolling introduction, if you understand what I mean.

   1972, Department of Transportation and Related Agencies Appropriations for 1973, United States Government Printing Office, page 431

   The Conservatives ... had introduced regionalized government executive offices in 1993 on the continental pattern, and John Prescott ... had promised a rolling introduction of regional assemblies along Welsh lines.

   2008, Paul Addison, Harriet Jones, editors, A Companion to Contemporary Britain, John Wiley & Sons, →ISBN