Simple past tense and past participle of accession. (verb)
Examples of word accessioned
As objects and specimens come into the AMNH collections, they are accessioned, meaning they are assigned a number and a record of accompanying data.
The only books I've de-accessioned are some coffee table books from the 70s and many now-dated bibliographies of recommended children's books.
Do you have a special location code for accessioned items that are still in use, like your 1930s heater?
The Museum turns nothing down: all gifts are accessioned, catalogued and displayed.
The clutter continues inside, where the Great Hall, dominated by a large mural of King, also houses a kiosk selling de-accessioned books, a video phone booth, a temporary stage, a tub for recycling cellphones, tables for displaying books, movable art pods that serve as exhibition space, and special shelves for books pertinent (at the moment) to National Bike Month.