E-BrainContext-Aware AI Dictionary for Chrome

E-Brain is a Chrome extension that acts as an AI-powered context dictionary. It reads surrounding text to decode slang, jargon, or unfamiliar words in the sense they are actually used, backed by a choice of Gemini, ChatGPT, or Claude, with a saveable Word Bank and dyslexia-friendly reading mode.

free

Chrome extensionAI dictionarycontextual definitionslang decodervocabularyGeminiChatGPTClaudeaccessibility

IndexedJuly 3, 2026

UpdatedJuly 5, 2026

4.2 (0 Number of reviews)

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What E-Brain does

E-Brain is a Chrome extension distributed through the Chrome Web Store that turns any web page into a context-aware dictionary. Rather than looking up a word in isolation, it feeds the surrounding sentence to a large language model and returns a definition that matches how the word is actually being used. That helps with internet slang, technical jargon, and words that carry multiple senses.

How it works

Users highlight a word or short phrase, and the extension asks the connected AI model to identify the part of speech and produce a contextual definition. Users can pick their preferred backend from Google Gemini, OpenAI ChatGPT, or Anthropic Claude. The extension can read the definition aloud through text-to-speech and can save decoded words into a personal Word Bank alongside the sentence they came from, which can later be exported for use in flashcard apps.

Dyslexia-Friendly Mode with softer typography and a warm background for easier reading.
Grammar parsing that labels the selected text as a noun, verb, adjective, phrase, or slang term.
Setup guide with visual walkthrough for connecting an AI provider.

Listing details

The Chrome Web Store listing shows the extension at version 1.2.0, roughly 1.32 MiB in size, in English, and last updated on July 30, 2026. The developer is listed as Renounced, based in Leeds, UK. According to the store privacy panel, the extension handles web history and website content, and the developer states this data is not sold to third parties or used for unrelated purposes. Users bring their own API keys for the model of their choice.

Pros & Cons

Pros

Contextual definitions rather than generic dictionary entries
Choice of Gemini, ChatGPT, or Claude as the backing model
Word Bank capture with export for flashcard apps
Dyslexia-Friendly reading mode built in

Cons

Chrome extension only, not a mobile or desktop app
Users must bring their own AI provider API key
Ratings and reviews not yet accumulated on the store listing

Frequently Asked Questions

Which browsers does E-Brain support?

It is listed on the Chrome Web Store as a Chrome extension.

Which AI models can it use?

The listing describes support for Google Gemini, OpenAI ChatGPT, and Anthropic Claude, chosen in settings.

Can I export saved words?

Yes. Words captured in the Word Bank can be exported for use in flashcard apps.

How much does it cost?

The store listing does not publish a price. Any AI provider fees are billed by that provider. Details are per the official listing.

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