Isos

Part of speech: noun

Definitions

1. Plural of ISO, referring to archive files that replicate the complete contents of an optical disc
2. Files that hold a full sector-by-sector copy of a CD or DVD, often used for mounting or burning discs
3. Disc image archives that store every track and data sector of an optical disc in a single file

Etymology: "Isos" is the plural of "iso," a short form most people meet in the phrase "ISO setting" on a camera, where it refers to the sensitivity of the film or sensor to light. The plural is used for the standards themselves, as in the international standards published by the International Organization for Standardization, whose name is abbreviated ISO. Because the abbreviation is derived from the Greek "isos," meaning "equal," the same root appears in words such as "isosceles," a triangle with two equal sides.