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.
noun, Chemistry. 1. an emerald-green, crystalline, extremely water-soluble salt, used in photography and blueprinting.
[fer-ahy-sahy-an-ik, fer-ee-] /ˈfɛr aɪ saɪˈæn ɪk, ˈfɛr i-/ noun, Chemistry. 1. a brown, crystalline, unstable, water-soluble solid, H 3 Fe(CN) 6 , obtained by the interaction of a ferricyanide and an acid. /ˌfɛrɪsaɪˈænɪk/ noun 1. a brown soluble unstable solid tribasic acid, usually known in the form of ferricyanide salts. Formula: H3Fe(CN)6
[fer-ahy-sahy-uh-nahyd, fer-ee-] /ˌfɛr aɪˈsaɪ əˌnaɪd, ˌfɛr i-/ noun, Chemistry. 1. a salt of ferricyanic acid, as , K 3 Fe(CN) 6 . /ˌfɛrɪˈsaɪəˌnaɪd/ noun 1. any salt of ferricyanic acid
[fer-ee] /ˈfɛr i/ noun, plural ferries. 1. a commercial service with terminals and boats for transporting persons, automobiles, etc., across a river or other comparatively small body of water. 2. a ferryboat. 3. a service for flying airplanes over a particular route, especially the delivery of airplanes to an overseas purchaser or base of operations. […]
/ˈfɛrɪə/ noun 1. Kathleen. 1912–53, British contralto; noted for her expressive voice n. “ferryman,” mid-15c., from ferry + -er (1).