megachange

English

Etymology

From mega- +‎ change.

Noun

megachange (plural megachanges)

1. (informal) A very large or significant change.
   • 2006, Patrick W. O'Carroll, William A. Yasnoff, M. Elizabeth Ward, Public Health Informatics and Information Systems, page 189:

     On the other hand, a megachange might take the form of a completely new system or a very major revision of an existing system. The changes that either form of megachange would create would fundamentally alter the way work is done.