ISO 639-3

ISO 639-3

ISO 639-3 is a part of the ISO 639 set of standards, which are international standards for language codes. Specifically, ISO 639-3 provides a comprehensive set of three-letter codes for identifying languages. It is designed to cover all known natural languages, including living, extinct, ancient, and constructed languages.

Overview

ISO 639-3 was developed by the International Organization for Standardization (ISO) and was first published in 2007. The standard aims to provide a more comprehensive and detailed coding system than its predecessors, ISO 639-1 and ISO 639-2, which use two-letter and three-letter codes, respectively, but cover fewer languages.

The ISO 639-3 standard is maintained by the SIL International, which is responsible for the Ethnologue, a comprehensive reference work cataloging all of the world’s known living languages.

Structure

ISO 639-3 assigns a unique three-letter code to each language. These codes are designed to be stable and are not intended to change over time. The codes are generally mnemonic, meaning they are often derived from the name of the language in English or in the language itself.

Examples

- eng: English - spa: Spanish - fra: French - zho: Chinese

Purpose and Use

ISO 639-3 is used in a variety of applications, including: - Linguistic Research: Providing a standardized way to refer to languages in academic and research contexts. - Information Technology: Facilitating language identification in software and databases. - Library and Information Science: Assisting in the cataloging and classification of multilingual collections.

Relation to Other Standards

ISO 639-3 is part of the broader ISO 639 family of standards, which includes: - ISO 639-1: Two-letter codes for major languages. - ISO 639-2: Three-letter codes for languages, including those not covered by ISO 639-1. - ISO 639-5: Three-letter codes for language families and groups.

Maintenance and Updates

The ISO 639-3 standard is regularly updated to include new languages and to reflect changes in the understanding of language relationships. Proposals for changes can be submitted by anyone and are reviewed by a committee of experts.

Criticism and Challenges

Some criticisms of ISO 639-3 include: - Complexity: The large number of codes can be overwhelming and difficult to manage. - Coverage: Despite its comprehensiveness, some languages and dialects may still be underrepresented or misclassified.

Also see

- ISO 639-1 - ISO 639-2 - ISO 639-5 - Ethnologue - Language code