ephemera

/ɪˈfɛməɹə/

noun

Objects that are designed to be short-lived.
"vintage ephemera"
(library science) Published single-sheet or single page documents which are meant to be thrown away after one use.
(by extension) Transitory audiovisual matter not intended to be retained or preserved.
"audio ephemera"

noun

Something short-lived or transitory.
A type of weak reference in a garbage collected programming language that does not permit an object to be kept alive by its finalizer.

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