The file extension or file header of the archive file are indicators of the file format used. Computer archive files are created by file archiver software, optical disc authoring software, and disk image software. Archive formats. An archive format is the file format of an archive file.
Definition of sewage for English Language Learners. : waste material (such as human urine and feces) that is carried away from homes and other buildings in a system of pipes.
effluent, sewer water. 1  waste, waste material, waste matter, waste product - any materials unused and rejected as worthless or unwanted; they collect the waste once a week; much of the waste material is carried off in the sewers. 2  sewage, sewerage - waste matter carried away in sewers or drains.