Acronymify от LDV

Acronymify is a browser extension that enables you to define acronyms, recognize them on web pages, and display their definition.

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When you load Acronymify for the first time, you will be guide to build your local database.

Then, click on a word on any web page, and activate the extension by using the shortcut or clicking the extension logo. If the word's definition is known, it will be displayed.