Targa Graphics Adaptor
(TGA) The Truevision Targa Graphics Adaptor file format.
The TGA format is a common bitmap file format for storage of 24-bit images. It supports colourmaps, alpha channels, compression and comments.
Filename extension: .tga.
More information is available from Truevision and The Graphics File Format Page.
[What does it have to do with graphics adaptors?]