XDXF - XML Dictionary Exchange Format

About

From the website:

XDXF is a project to unite all existing open dictionaries and provide both users and developers with universal XML-based format, convertible to and from other popular dictionary formats.

There are currently 308 dictionary files in various languages.

Format

It appears dictionary files are in XML.

Access/Re-use

The SourceForge XDXF project page says material is available under GPL.

Dictionaries are available on the download page.