Weighted average cost of capital (WACC)
The average cost of capital (whether equity or debt), taking into account the relative proportions of each source of capital. (Encyclopedia of Real Estate Terms 2nd Edition, Damien Abbott)
Workstation GIS
Mainframe-oriented or UNIX-based computer-software products, programs, and systems that are specifically geared toward large-scale applications, requiring large platforms and advanced programming skills and knowledge.