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ferrous

/ˈfɛrəs/

adjective
- 1. (chiefly of metals) containing or consisting of iron.
- 2. of iron with a valency of two; of iron(II).
Word Origin mid 18th century: from Latin ferrum ‘iron’ + -ous.
Scrabble Points: 10
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Ferrous
Dication of iron
In chemistry, iron refers to the element iron in its +2 oxidation state. The adjective ferrous or the prefix ferro- is often used to specify such compounds, as in ferrous chloride for iron(II) chloride ( FeCl2). The adjective ferric is used instead for iron(III) salts, containing the cation Fe3+. The word ferrous is derived from the Latin word ferrum, meaning "iron". Wikipedia
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