As noted by Martin Dougiamas this week, “Moodle” can now be found in the Macmillan Dictionary, complete with pronunciation: http://www.macmillandictionary.com/dictionary/british/moodle.
Interestingly it seems that the noun has dropped the capital M. That being said I think I’ll personally continue using the terms as a proper noun.
Go look Moodle up.
Here’s a link to Martin’s tweet: http://twitter.com/moodler/status/11454561632