Pronunciation: (stärt'up"), [key]
the act or fact of starting something; a setting in motion.
of or pertaining to the beginning of a new project or venture, esp. to an investment made to initiate such a project, as in a commercial or industrial enterprise: high start-up costs. Also,start'up".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.