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AS/NZS ISO 11940.2:2025

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Information and documentation – Transliteration of Thai characters into Latin characters – Part 2: Simplified transcription of Thai language

The objective of this document is to provide pronunciation rules and conversion tables of Thai consonants and vowels. These rules are applied, in order, to each word which can be looked up or compared in the Dictionary of the Thai Royal Institute or a dictionary of Thai pronunciation. A short-long vowel is not distinguished in the simplified transcription system. The vowels เ-าะ (e-āa), -อ (x), โ-ะ (o-a), and โ- (o) are represented by a single transcription /o/. The simplified transcription system does not include the pronunciation of the tone(s) on each word. Whenever the full pronunciation of each word is necessary or needed, conversion of long vowels can be devised, and tone rules can be added to the system to achieve the full pronunciation of each word.

This document is identical with and has been reproduced from ISO 11940‑2:2007 Information and documentation – Transliteration of Thai characters into Latin characters – Part 2: Simplified transcription of Thai language.

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AS/NZS ISO 11940.2:2025

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