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English Dictionary | cobaltous

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- - cobalt bloom
  - cobalt blue
  - cobalt bomb
  - cobalt green
  - cobalt violet deep
  - cobalt violet light
  - cobalt yellow
  - cobaltammine
  - cobaltic
  - cobaltite
  - cobaltous
  - cobaltous hydroxide
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cobaltous

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WordReference Random House Unabridged Dictionary of American English © 2026

co•bal•tous adj.

Chemistrycontaining bivalent cobalt.

cobalt + -ous 1860–65

'cobaltous' also found in these entries (note: many are not synonyms or translations):

cobalt blue - cobaltous hydroxide

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