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ISO base media file format, a container format for time-based multimedia files; ISO 5800, a film speed system Digital camera ISO, light sensitivity of a digital image sensor; ISO 8601, a date format; ISO(n), the Euclidean group; Isopropyl alcohol, the simplest secondary alcohol; Infrared Space Observatory, a space telescope active from 1995 to 1998
[note 2] For a complete and up-to-date list of all the ISO standards, see the ISO catalogue. [ 1 ] The standards are protected by copyright and most of them must be purchased.
initialism = an abbreviation pronounced wholly or partly using the names of its constituent letters, e.g., CD = compact disc, pronounced cee dee; pseudo-blend = an abbreviation whose extra or omitted letters mean that it cannot stand as a true acronym, initialism, or portmanteau (a word formed by combining two or more words).
A computer file format for coloured images, restricted to 256 colours and useful for small file-size. [8] GN: Guide number. A value indicating the power of an electronic flash apparatus, and used to estimate exposure. GN = distance × f-number. One needs to specify the film or sensor ISO speed, and it is conventional to quote for ISO 100/21°.
The International Organization for Standardization (ISO / ˈ aɪ s oʊ /; [3] French: Organisation internationale de normalisation; Russian: Международная организация по стандартизации) is an independent, non-governmental, international standard development organization composed of representatives from the national standards organizations of member ...
ISO 639 is a standardized nomenclature used to classify languages. [1] Each language is assigned a two-letter (set 1) and three-letter lowercase abbreviation (sets 2–5). [ 2 ] Part 1 of the standard, ISO 639-1 defines the two-letter codes, and Part 3 (2007), ISO 639-3 , defines the three-letter codes, aiming to cover all known natural ...
This is a comparison of the IOC, FIFA, and ISO 3166-1 three-letter codes, combined into one table for easy reference. Highlighted rows indicate those entries in which the three-letter codes differ from column to column.
Abbreviations pages are a type of disambiguation (see Wikipedia:Disambiguation). Usually, there should be just one page for all cases (upper- or lower-case), e.g. MB for MB, mB, mb, Mb . If the case of the abbreviation is important (e.g. for SI Units, symbols for chemical elements), the exact one should be noted.