The word processing and technical writing software I use both accept reoccurring during a spell check but are unable to find it in their thesauri. The spell check on this fabulous site, however, does not recognize it and recommends reopen as a replacement but also does not recognize thesaurus. No dictionary I have ever referenced contains it, but the software writers and developers I work with have it sprinkled throughout their test plans and GUI, so I want to be absolutely certain this isn't one of those recent, Prohibition-type (it's not going away so let's make it legal) additions to our burgeoning English language. Any leads are appreciated.

Thanks much,
Diborg

P.S. It feels un-word-like and redundant.