fer·​rous | \ ˈfer-əs How to pronounce ferrous (audio) , ˈfe-rəs\

Definition of ferrous

1 : of, relating to, or containing iron
2 : being or containing divalent iron

Examples of ferrous in a Sentence

Recent Examples on the Web

Even the most robust bike is going to show the effects of constant salt air bombardment, and the Coasts did reveal their few ferrous parts—the nut and bolt under the seat post, for instance. Ezra Dyer, Popular Mechanics, "Does a Rust-Proof Bike Really Exist?," 18 July 2019 Iron-ore futures reached fresh 4½-year highs on Friday, with ongoing tumult for miner Vale SA extending the ferrous metal’s sharp recent gains. David Hodari, WSJ, "Iron-Ore Rally Continues as Vale Ordered to Evacuate Town," 8 Feb. 2019 In a salty, ferrous glacial waterfall known as Blood Falls, her team previously discovered a new strain of bacteria adapted to survive in brutally cold temperatures. Daniela Hernandez, WSJ, "The Hunt for Alien Life Starts in Earth’s Most Extreme Places," 9 Apr. 2019 The next station uses a huge rotating magnet to pull out any ferrous metals, which range from tin cans (which have very little tin) to car parts. John Timmer, Ars Technica, "Bikes, bowling balls, and the delicate balancing act that is modern recycling," 31 Dec. 2018 By varying electric current through a ferrous fluid, Magnetic Ride Control dampers can adjust their stiffness in response to driving conditions. Ezra Dyer, Popular Mechanics, "3 Technologies That Are Making Car Suspensions Smarter Than Ever," 31 Jan. 2017 Their cost of ferrous feedstock per ton of steel is $90 higher than the average in Brazil, Russia, Japan and China, according to analysts at Bernstein. Nathaniel Taplin, WSJ, "Does American Steel Need More Protection?," 7 Mar. 2018 Steel Dynamics, which has facilities located in the U.S. and in Mexico, produces steel products, liquid pig iron, and processes and sells ferrous and nonferrous scrap. Aisha Al-muslim, WSJ, "Steel Dynamics Gets Boost From Improved Demand for Steel," 19 Apr. 2018 Behind him, past scavenging and defecating prisoners, is a fence of barbed wire, and beyond it, a sky of ferrous gray. Jason Farago, New York Times, "Walk Through This Exhibition With Dread. You Know Where It Leads.," 5 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ferrous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ferrous

1755, in the meaning defined at sense 1

History and Etymology for ferrous

New Latin ferrosus, from Latin ferrum

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The first known use of ferrous was in 1755

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English Language Learners Definition of ferrous

technical : of, relating to, or containing iron


fer·​rous | \ ˈfer-əs How to pronounce ferrous (audio) \

Medical Definition of ferrous

1 : of, relating to, or containing iron
2 : being or containing iron with a valence of two

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to fake an opponent out of position

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