For students

Read the canon without getting lost in the prose.

University readings throw you into the deep end of archaic language, dense philosophical systems, and academic jargon. Lexio is a contextual dictionary that sits on top of your PDFs and online texts. It reads the whole sentence and explains exactly what the author means, right now.

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Handling complex texts

Because spleen in Baudelaire is not spleen in Biology.

A regular dictionary gives you a list of possible meanings. Lexio uses Claude Sonnet 4.5 and Gemini 2.5 Flash to give you the right meaning for the specific text you're assigned.

Deep mode for philosophy

Kant's noumenon or Heidegger's Dasein? Lexio's Deep mode (Claude Sonnet 4.5) reads the surrounding paragraph to tell you which specific sense the author is invoking in their philosophical system. No more guessing.

Perfect for continental philosophy and theory.

Archaic words & literature

When Shakespeare says discover, he doesn't mean "find"—he means "reveal". When reading the classics, the Victorian novel, or the King James Bible, Lexio knows the period-specific senses of words.

Stop looking up words that look familiar but feel wrong.

Terms of art

Academic papers are full of jargon and specific terms of art. Lexio recognizes when a common word is being used in a highly specific, disciplinary way and defines it accordingly.

Navigate academic journals with ease.

Automated study guides

Your reading assignments review themselves.

Stop highlighting words in a PDF and forgetting to look them up later. Lexio tracks what you don't know and builds a study guide for you.

The Word Bank

Every time you look up a word on a website or in a scanned PDF, Lexio saves it. Your Word Bank becomes a running log of the exact vocabulary you found difficult during your semester reading.

A personalized record of your reading history.

Spaced repetition export

Before finals, click one button to export your entire Word Bank to Anki. Lexio creates the flashcards automatically, putting the word on the front, and the definition and the original sentence from your reading on the back.

Turn reading into retention instantly.

Read everywhere

Works on printed books and locked PDFs.

University courses love to assign scanned book chapters as locked PDFs where you can't highlight or copy the text. With Lexio's built-in OCR (Optical Character Recognition), you can drop a screenshot of the PDF or take a photo of a physical book with your phone. Lexio instantly extracts the text and lets you tap any word for a contextual definition. The book stays a book, and you get your definitions.

Dominate your syllabus.

Free plan available. Install the Chrome extension, or paste a passage on the homepage and click any word.

Start reading with Lexio