.ovl
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English[edit]
Etymology[edit]
Abbreviation of overlay.
Noun[edit]
.ovl (countable and uncountable, plural .ovls or .ovl's or .ovl)
- (computing) An overlay file. From the extension for an overlay file. A file used in memory limited systems to overwrite portions of program execution space (code and data) to enable other operations; such as found in 8-/10-/12-/16-bit systems.