The meaning of the Acronym IGS is...

IGS is

• 2D or 3D CAD model Initial Graphics Exchange Specification format
• Image Systems Grayscale

More Meanings For IGS:

• 2D or 3D CAD model Initial Graphics Exchange Specification format
• Image Systems Grayscale
• Interchange Group Separator
• Insoluble Glue Substances
• Institute of Geological Sciences
• Inner Gulf Shelf
• International Glaciological Society
• Ins Giant System
• International Guitar Seminars
• International Gentlemans Society
• Impact Guidance System
• Indoor Grow System
• Intermediate General Support
• Instrument Guiding System
• Inertial Guidance System

IGS is also in:

• Chemistry
• File Extensions
• General
• Geology
• Military
• NASA
• Ocean Science
• Unfiled