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Preview of WordGloss

WordGloss by John

Instant definitions and pronunciation for selected words without leaving the page.

Available on Firefox for Android™Available on Firefox for Android™
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Extension Metadata

About this extension
WordGloss gives you fast, inline word definitions without interrupting your browsing.

Select a word on nearly any webpage and WordGloss opens a compact definition card with:

Clear, concise definitions
Multiple meanings when available
Human pronunciation recordings from Wiktionary/Wikimedia Commons when available
Speech synthesis as a fallback when recorded pronunciation is unavailable
Automatic language detection
Manual language selection
Support for multiple languages
Fast cached lookups

WordGloss is designed to stay out of the way: select a word, get its meaning, and continue reading without opening another tab.

What WordGloss can access:
WordGloss only reads the word you select so it can provide a definition. It may also use the webpage’s language setting to choose the appropriate dictionary.

WordGloss does NOT read or collect:
-The rest of the webpage
-Surrounding sentences or paragraphs
-Your browsing history
-Cookies or saved website data
-Passwords, account details, or form entries
-Clipboard contents
-Images, links, or downloaded files

The selected word is sent to DictionaryAPI or Wiktionary to retrieve its definition. Pronunciation audio may also be loaded from Wiktionary, Wikimedia Commons, or another listed audio provider.
WordGloss does not contain advertising, analytics, or tracking.
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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 en.wiktionary.org
  • Access your data for upload.wikimedia.org
  • Access your data for ssl.gstatic.com

Required data collection, according to the developer:

  • Website content
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More information
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Version
2.0.5
Size
26.71 KB
Last updated
6 days ago (Aug 10, 2026)
Related Categories
  • Search Tools
  • Language Support
License
Mozilla Public License 2.0
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