Definio Dictionary – Instant Multi-Source Definitions

Get English definitions from Definio's 450K+ words, Oxford & Wikipedia via side panel, right-click or text selection.

Definio Dictionary is a modern, multi-source English dictionary built for speed, clarity, and convenience. It gives you access to over 450,000 English words from Definio's own database, Oxford Dictionary (the same trusted source used by Google), and Wikipedia extracts — all in one sleek interface. ✅ KEY FEATURES: - Extensive Word Coverage: Look up over 450,000 English words from Definio's dictionary. - Oxford Dictionary & Wikipedia Integration: Instantly fetch high-quality definitions from the Oxford Dictionary and detailed descriptions from Wikipedia. - Configurable Output: Choose what you want to see: definitions, examples, pronunciation, synonyms, antonyms, and more. Font size is also fully customizable. - Multiple Access Options: ↳ Side panel (default keyboard shortcut: Alt+Shift+D on Windows/Linux, Option+Shift+D on Mac) ↳ Right-click menu on selected text ↳ Select any text on a page when the panel is open - Voice Pronunciation: Hear how the word sounds, helping with pronunciation and listening skills. - Minimal & Clean Interface: Built for focus with dark mode support and no clutter. - No Sign-In Needed: Start using right away — fast, private, and distraction-free. 🔍 USAGE TIPS: - Keyboard Shortcut: Press Alt+Shift+D on Windows/Linux or Option+Shift+D on Mac (customizable in Chrome extensions settings) to open the side panel - Once the side panel is open, any text you select on the page is automatically looked up - Right-click on any selected text and click "Look up in Definio" to look it up instantly in the side panel Chrome Limitations: ⚠️ The extension does not work with PDF files viewed in the browser ⚠️ Selecting the text first and then opening the side panel using shortcut will not automatically look up the selected text. Use the right-click menu instead. Or open the side panel first and then select the text. 🛡️ WHY A SIDE PANEL? - Privacy First: Unlike popup extensions, Definio works in its own dedicated space without injecting content into web pages - Non-Intrusive Design: The side panel never covers or alters the content you're reading - Better Reading Experience: Look up words without losing your place in the text or having floating boxes interrupt your flow - Persistent Results: Keep your definitions visible while continuing to read and navigate the web 📚 Whether you're reading, researching, or writing — Definio is your quick-access English companion right in your browser.