Reverso Define: An AI-Powered Contextual Dictionary for Professionals

Quentin Pleplé, Théo Hoffenberg


Abstract
We present Reverso Define, an innovative English dictionary designed to support translation professionals with AI-powered, context-aware definitions. Built using a hybrid approach combining Large Language Models and expert linguists, it offers precise definitions with special attention to multi-word expressions and domain-specific terminology. The system provides comprehensive coverage of technical domains relevant to professional translators while maintaining daily updates to address emerging terminology needs. It also provides indicative translations in 26 languages linked to each meaning, and variants within languages, when appropriate, and has links to Reverso Context, the range of contextual and corpus-based bilingual dictionaries, and Reverso Synonyms. We will show the various ways to use it with concrete examples and give some insights on its design and creation process.
Anthology ID:
2025.mtsummit-2.26
Volume:
Proceedings of Machine Translation Summit XX: Volume 2
Month:
June
Year:
2025
Address:
Geneva, Switzerland
Editors:
Pierrette Bouillon, Johanna Gerlach, Sabrina Girletti, Lise Volkart, Raphael Rubino, Rico Sennrich, Samuel Läubli, Martin Volk, Miquel Esplà-Gomis, Vincent Vandeghinste, Helena Moniz, Sara Szoc
Venue:
MTSummit
SIG:
Publisher:
European Association for Machine Translation
Note:
Pages:
111–112
Language:
URL:
https://preview.aclanthology.org/mtsummit-25-ingestion/2025.mtsummit-2.26/
DOI:
Bibkey:
Cite (ACL):
Quentin Pleplé and Théo Hoffenberg. 2025. Reverso Define: An AI-Powered Contextual Dictionary for Professionals. In Proceedings of Machine Translation Summit XX: Volume 2, pages 111–112, Geneva, Switzerland. European Association for Machine Translation.
Cite (Informal):
Reverso Define: An AI-Powered Contextual Dictionary for Professionals (Pleplé & Hoffenberg, MTSummit 2025)
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PDF:
https://preview.aclanthology.org/mtsummit-25-ingestion/2025.mtsummit-2.26.pdf