Etymograph

English

ferrous

Ferrous comes from Latin ferreus ‘iron, made of iron’, and goes back to Old Latin *fersom.

  1. Old Latinc. 700–75 BCE*fersomreconstructed
  2. Latinc. 75 BCE–200 CEferrum‘iron’
  3. Latin, derivedc. 75 BCE–200 CEferreus‘iron, made of iron’by way of French ferreux
  4. Englishtodayferrous

attested reconstructed ? uncertain or disputed

Lineage

  1. Old Latinc. 700–75 BCE*fersomreconstructed
  2. Latinc. 75 BCE–200 CEferrum‘iron’
  3. Latin, derivedc. 75 BCE–200 CEferreus‘iron, made of iron’by way of French ferreux
  4. Englishtodayferrous

Formed from ferro- + -ous

Old Latin *fersom

Latin ferrum ‘iron’

English ferro-

Linked words

through Latin ferrum ‘iron’

farrier, ferrite, ferric, ferritin, ferruginous, 9 more

Today it means

adj Of or containing iron.

Language periods are conventional ranges, not dates for this word.

Etymograph / Old Latin *fersom / ferrous