Bilingual dictionary

A bilingual dictionary or translation dictionary is a specialized dictionary used to translate words or phrases from one language to another. Bilingual dictionaries can be unidirectional, meaning that they list the meanings of words of one language in another, or can be , allowing translation to and from both languages. Bidirectional bilingual dictionaries usually consist of two sections, each listing words and phrases of one language alphabetically along with their translation. In addition to the translation, a bilingual dictionary usually indicates the part of speech, gender, verb type, declension model and other grammatical clues to help a non-native speaker use the word. Other features sometimes present in bilingual dictionaries are lists of phrases, usage and style guides, verb tables, maps and grammar references. In contrast to the bilingual dictionary, a monolingual dictionary defines words and phrases instead of translating them.

The Roman Emperor Claudius (10 BCE – 54 CE) is known to have compiled an Etruscan-Latin dictionary, now lost.

One substantial bilingual dictionary was the Mahāvyutpatti. The Mahāvyutpatti (Wylie: Bye-brtag-tu rtogs-par byed-pa chen-po), The Great Volume of Precise Understanding or Essential Etymology, was compiled in Tibet during the late eighth to early ninth centuries CE, providing a dictionary composed of thousands of Sanskrit and Tibetan terms designed as means to provide standardised Buddhist texts in Tibetan, and is included as part of the Tibetan Tangyur (Toh. 4346).

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