a dark-red, crystalline, water-insoluble solid, Fe 2 O 3 , occurring naturally, as hematite and rust, or synthesized: used chiefly as a pigment, as a mordant, as a coating for magnetic recording tape, and in the manufacture of polishing compounds.
a red crystalline insoluble oxide of iron that occurs as haematite and rust and is made by heating ferrous sulphate: used as a pigment and metal polish (jeweller’s rouge), and as a sensitive coating on magnetic tape. Formula: Fe2O3 Systematic name iron (III) oxide
A reddish-brown to silver or black compound which occurs naturally as the mineral hematite and as rust. It is often used as a pigment and a metal polish. Chemical formula: Fe2O3.
Any of various oxides of iron, such as ferric oxide or ferrous oxide.
noun, Chemistry. 1. . noun, Chemistry. 1. a compound that in its anhydrous form, FeCl 3 , occurs as a black-brown, water-soluble solid; in its hydrated form, FeCl 3 ⋅xH 2 O, it occurs in orange-yellow, deliquescent crystals: used chiefly in engraving, for deodorizing sewage, as a mordant, and in medicine as an astringent and […]
- Iron pan
noun 1. (geology) a hard layer of precipitated iron salts often found below the surface of sands and gravels
noun 1. . [as-pi-dis-truh] /ˌæs pɪˈdɪs trə/ noun 1. any of several plants belonging to the genus Aspidistra, of the lily family, native to eastern Asia, especially A. eliator, having large evergreen leaves often striped with white, and grown as a houseplant. /ˌæspɪˈdɪstrə/ noun 1. any Asian plant of the liliaceous genus Aspidistra, esp A. […]
[ahy-ern-puhm-per] /ˈaɪ ərnˌpʌm pər/ noun, Informal. 1. a person who pumps iron; weightlifter. noun A weightlifter (1972+) iron up verb phrase To put on tire chains (1940s+ Truckers)