adj · 4 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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fĕr'əs
/ˈfɛɹəs/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -ɛɹəs
CMU ARPABET:F EH1 R AH0 S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Of or containing iron.
Definition source: English Wiktionary via Wiktextract
Examples
ferrous metals
ferrous scrap
Meaning relationships
Synonyms: ferric, siderous
Antonyms: none provided
2
adj
Meaning 2
Of compounds of iron in which it has a valence or oxidation number of +2.
Definition source: English Wiktionary via Wiktextract