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ferromanganese
ferronickel
ferronneries
ferrosilicon
ferrotype
ferrous
ferrous oxide
ferrous sulfate
ferrous sulfide
ferruginous
ferrule
ferrum metallicum
ferry
ferryboat
ferryman
fertile
Fertile Crescent
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ferrous sulfide
fer·rous sul·fide


noun 
Definition:
 
black compound of iron: a black solid containing iron and sulfur. Source: pyrite, marcasite. Use: making hydrogen sulfide. FeS
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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