Acidness n. : Acidity; sourness.

Example:


Taxonomy
Plesk control panel, site content, test pages, Web server, new site, using FTP, Web applications, image gallery, discussion forum, online store, wizard, service, hosting provider, database connections, icon, scripts, Parallels, Sitebuilder.

Defination from the web:
... Plesk Control Panel ships with several test pages that you can use for checking the scripting features, testing database connections and mail sending. ...