zinc-bloomhttp://www.oed.com/dictionary/zinc-bloom_n%3Ftab%3Dmeaning_and_usezinc-bloom, n.
First published 1921; not fully revised

zinc-bloomnoun

  1. 1842–
    Hydrous carbonate of zinc, hydrozincite.
    1. 1842
      The mineral substance, zinc bloom.
      T. Graham, Elements of Chemistry ii. v. 575

Originally published as part of the entry for zinc, n.

zinc, n. was first published in 1921; not fully revised.