Dictionary.com
definitions

ferromolybdenum

[fer-oh-muh-lib-duh-nuh m, -mol-ib-dee-]
noun
  1. a ferroalloy containing up to 60 percent molybdenum.

Origin of ferromolybdenum

First recorded in 1900–05; ferro- + molybdenum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for ferromolybdenum

ferromolybdenum

noun
  1. an alloy of iron and molybdenum used in making alloy steels
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012