jekyll-glossary_tooltip

https://github.com/erikw/jekyll-glossary_tooltip

This plugin simplifies for your readers and you by making it easy to define terms or abbreviations that needs an explanation. Define a common dictionary of terms and their definition in a YAML file. Then inside markdown files you can use the provided glossary liquid tag to insert a tooltip for a defined word from the dictionary. The tooltip will show the term definition on mouse hover.