What does CIGS stand for?

Centre for Interdisciplinary Gender Studies - University of Leeds - United Kingdom (RCD)

Centre International de Gerontologie Sociale - International Center of Social Gerontology - ICSG - Paris, France - Defunct

Chief of the Imperial General Staff - Later, CGS - British

Computer Image Generation System (ACAE)

Copper, Indium, Gallium, and Selenium - Photovoltaics