archival

/ɑːrˈkaɪvəl/
adjective
  1. Relating to or kept in an archive (a collection of historical records or documents).
    • She works in the archival department, preserving old photographs.
    • Archival materials must be stored in a cool, dry place.
    • The museum has an archival collection of letters from the 1800s.
  2. Of a quality suitable for long-term preservation.
    • The photographer stores negatives in archival sleeves.
    • They used archival paper to print the family tree so it would last.
    • For important documents, choose archival ink that won't fade.
Antonyms
What does "archival" mean? | whatsthatwordmean | whatsthatwordmean