“of iron”

The following 4 entries include the term of iron.

nitrate of iron

: a dark red chiefly ferric sulfate liquid made usually by oxidizing a solution of ferrous sulfate with nitric acid and used as a mordant in dyeing

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oxide of iron

: iron oxide

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pyrolignite of iron

: iron liquor

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rule with a rod of iron

phrase

: to rule a country, area, group, etc., in a very strict and often cruel way

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