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Preview of Define Select Dictionary

Define Select Dictionary by eldon922

Double-click a word or select a phrase on any page to see its definition and pronunciation, without leaving the page.

Available on Firefox for Android™Available on Firefox for Android™
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About this extension
Look up a word without losing your place.

Double-click any word on any web page, or select a few words with the mouse,
and a small popup appears with the definition, right where you are reading.
Press on and the popup disappears when you click away.

FEATURES
  • Instant lookups: up to five definitions, with part of speech and example
    sentences where available.
  • Phrase lookups: select several words to define the whole phrase.
  • Pronunciation: a speaker button that reads the word aloud with your browser's
    text-to-speech, plus a phonetic transcription and a recorded pronunciation
    where available.
  • Search engine: choose Google or DuckDuckGo for lookups and the Learn more
    link.
  • Nested lookups: met another word you do not know inside a definition?
    Double-click that one too.
  • Trigger key: optionally require holding Ctrl, Alt or Shift (Command on
    macOS) while double-clicking or selecting, so popups only appear when you
    want them.
  • Word history: optionally keep the words you look up, see the count on the
    options page, and export the lot as CSV. It stays on your device.
  • Dark mode: the popup follows your system colour scheme.

PRIVACY

No accounts, no analytics, no tracking, and no data sent to the developer.
The only thing that leaves your browser is the text you select to define, sent
to the search engine you choose (Google or DuckDuckGo) and, if that finds
nothing, to a dictionary service. Your word history is stored locally and never
transmitted. Full policy:
https://github.com/eldon922/define-select-dictionary/blob/main/PRIVACY.md

Definitions come from a web search for the selected text on your chosen search
engine (Google by default, or DuckDuckGo), with the free Dictionary API
(dictionaryapi.dev) as a fallback.

Open source under the GPLv3. Originally based on Lexigo by Jort van Leenen,
itself based on Dictionary Anywhere by meetDeveloper.
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Permissions and data

Required permissions:

  • Access your data for all websites

Optional permissions:

  • Access your data for api.dictionaryapi.dev
  • Access your data for noai.duckduckgo.com
  • Access your data for translate.googleapis.com

Required data collection, according to the developer:

  • Website content
Learn more
More information
Add-on Links
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Version
1.1.0
Size
90.67 KB
Last updated
20 days ago (Oct 13, 2026)
Related Categories
  • Search Tools
License
GNU General Public License v3.0 only
Privacy Policy
Read the privacy policy for this add-on
Version History
  • See all versions
Tags
  • google
  • search
  • translate
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