A disagreeably facetious type glossary
http://www.microsoft.com/typography/glossary/content.htm

FOR THE AMUSEMENT & EDIFICATION OF PEOPLE BEGINNING A LOVE AFFAIR WITH FONTS

http://www.glencoe.com/apps/eGlossary612/grade.php

The McGraw Hill Mathematics eGlossary provides written and verbal definitions and explanations of mathematics terms. The glossary is divided by grade level. Select your grade level then the first letter of the term for which you need an explanation. The explanation is offered in text form as well as verbal (click the speaker icon to listen). The eGlossary is also available in other languages including Spanish, Russian, and Chinese.

Multilingual glossary with hundreds of math terms defined in Arabic, Bengali, Chinese, Haitian Creole, English, Hmong, Korean, Russian, Spanish, Tagalog, Urdu, and Vietnamese. Just select a letter of the alphabet to get a list of mathematical terms beginning with that letter, choose a language, and click on a term. The response will be a chart listing the term in English, the term in whatever language you chose, and the definition in your chosen language. Many definitions are accompanied by illustrations.

This site was kind of neat because it listed all the key mathematical terms starting with 6th grade. It makes the terms easily accessible.

HTML 5

A comprehensive references of elements that are new or have been redefined in HTML5

"We wanted to provide a comprehensive references of elements that are new or have been redefined in HTML5, so we've created a glossary. We'll be adding to this in the coming weeks to make it more comprehensive."

Glosary HTML 5

Financial Times Lexicon

Browse thousands of words and phrases selected by Financial Times editors and suggest new terms for the glossary.

- The definitive glossary of economic, financial and business terms

Social media glossary from the Buzz Bin.

The Internet is a melting pot for new tools and trends, i.e. Social Media. For every new tool, new words or phrases are created. As more and more organizations struggle to embrace social media, we ended up cobbling together a quick glossary of terms for them. This is just a starter’s list based on things we’ve been asked. Please feel free to add to the list! (img from digitalheretix.com) Additional resources for social media terms include Mike Sansone’s Glossary of Blogging and Social Media Terms and Social media’s A-Z of social media.

A Social Media Glossary » The Buzz Bin http://ff.im/-7jqHl [from http://twitter.com/maxilprof/statuses/3610933332]

Good reference tool

a good glossary of sm terms

This glossary defines terms related to web standards, programming, online tools.

A very handy explanation from Poynter Online of abbreviations and jargon you may find occasionally confounding