I've added a new section to the site called "Glossary Of PMEL Terms". You can find it on the Main Menu and it contains the entire glossary from the metrology handbook.
Its content is searchable from the Search link on the Main Menu. You can also search from within the component itself. Although for some unknown reason you have to be logged in to use this function :x
Anyway, this should be a nice function when you need to research a specific term.
If you know of a term that is missing, please just shoot me a PM or e-mail with the info and I'll add it to the database. Thanks.
Jesse