Chemistry. a ductile, malleable, silver-white metallic element, scarcely known in a pure condition, but much used in its crude or impure carbon-containing forms for making tools, implements, machinery, etc. Symbol: Fe; atomic weight: 55.847; atomic number: 26; specific gravity: 7.86 at 20°C.: Compare cast iron, pig iron, steel, wrought iron.
something hard, strong, rigid, unyielding, or the like: hearts of iron.
an instrument, utensil, weapon, etc., made of iron.
an appliance with a flat metal bottom, used when heated, as by electricity, to press or smooth clothes, linens, etc.
Golf. one of a series of nine iron-headed clubs having progressively sloped-back faces, used for driving or lofting the ball.: Compare wood1 (def. 8).
any of several tools, structural members, etc., of metals other than iron.
the blade of a carpenter's plane.
Slang. a pistol.
Medicine/Medical. a preparation of iron or containing iron, used chiefly in the treatment of anemia, or as a styptic and astringent.
irons, shackles or fetters: Put him in irons!
of, containing, or made of iron: an iron skillet.
resembling iron in firmness, strength, color, etc.: an iron will.
holding or binding strongly: The country is in the icy, iron grip of the beast from the east, bitter Siberian winds that have trapped us in winter.
irritating or harsh in tone: an iron voice.
to smooth or press with a heated iron, as clothes or linens.
to furnish, mount, or arm with iron.
to shackle or fetter with irons.
Metalworking. to smooth and thin the walls of (an object being deep-drawn).
to press clothes, linens, etc., with an iron.
to iron or press (an item of clothing or the like).
to remove (wrinkles) from by ironing.
to resolve or clear up (difficulties, disagreements, etc.): The problem was ironed out months ago.
Idioms about iron
Nautical. (of a sailing vessel) unable to maneuver because of the position of the sails with relation to the direction of the wind.
Nautical. (of a towing vessel) unable to maneuver because of tension on the towing line.
Also into irons. in shackles or fetters.
irons in the fire, matters with which one is immediately concerned; undertakings; projects: He had other irons in the fire, so that one failure would not destroy him.
pump iron, to lift weights as an exercise or in competition.
strike while the iron is hot, to act quickly when an opportunity presents itself.
- i·ron·less, adjective
- i·ron·like, adjective
- un·i·roned, adjective
- well-ironed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use iron in a sentence
Without ironing out these issues, which could take years, scientists should not proceed with any clinical applications, the report said.A CRISPR Baby Future? New Report Outlines Path to Human Germline Editing | Shelly Fan | September 15, 2020 | Singularity Hub
The meeting with the king and the crown prince in Manama created momentum and Kushner felt he might be able to get an agreement then, but decided to give more time to iron out details, sources familiar with the issue told me.Behind the scenes of the U.S.-brokered Israel-Bahrain agreement | Barak Ravid | September 11, 2020 | Axios
These rules, too, were not enforced, so the researchers checked whether those with low iron or high inflammation were less likely to respond.
There appear to be two main reasons why WarnerMedia would still be ironing out HBO Max’s advertising pitch.WarnerMedia eyes spring debut for HBO Max’s ad-supported tier | Tim Peterson | September 10, 2020 | Digiday
Amazon is striking while the iron is hot with the Halo band, and a number of companies that have had continued success in Asia could potentially find an opening in the market.Low-cost fitness bands see a resurgence in interest amid the pandemic | Brian Heater | September 4, 2020 | TechCrunch
Cruce operates the iron Hill Campground on the other side of the highway.The 7-Year-Old Plane Crash Survivor’s Brutal Journey Through the Woods | James Higdon | January 7, 2015 | THE DAILY BEAST
Preheat oven to 375°F. Heat the vegetable oil in a large, high-sided cast iron skillet.Make Carla Hall’s Crispy Shallot Green Bean Casserole | Carla Hall | December 27, 2014 | THE DAILY BEAST
A whole population of 11 million with every iron in the fire doubling as a finger in a dike.The Life and Hard Times Of The Family A Cuban Defector Left Behind | Brin-Jonathan Butler | December 19, 2014 | THE DAILY BEAST
Choosing to strike while the iron was hot, Future announced his followup to Pluto, Future Hendrix, right away.Future Makes Us Rethink Everything We Thought We Knew About Rap Artists | Luke Hopping | December 15, 2014 | THE DAILY BEAST
But these choices are where iron from Ice (and other Telltale properties) sets itself apart.‘Game of Thrones’ Interactive FanFiction: Whoops, My Friend Was Speared in the Throat | Alec Kubas-Meyer | December 13, 2014 | THE DAILY BEAST
Mr. Jones swung round a large iron key he held in his hand, and light dawned upon him.Elster's Folly | Mrs. Henry Wood
Now, the whole Northwest groaned beneath a cast-iron prohibition law at that time, and for some years thereafter.Raw Gold | Bertrand W. Sinclair
She was in a dream of oily odours and monstrous iron constructions, dominated by the grand foreman: and Edwin was in the dream.Hilda Lessways | Arnold Bennett
The baron turned full upon him, and leaned his shoulders against the iron door of the recess.Checkmate | Joseph Sheridan Le Fanu
The churchyard was partly surrounded by houses, and in 1781 "iron pallisadoes" were affixed to the wall.Showell's Dictionary of Birmingham | Thomas T. Harman and Walter Showell
British Dictionary definitions for iron
a malleable ductile silvery-white ferromagnetic metallic element occurring principally in haematite and magnetite. It is widely used for structural and engineering purposes. Symbol: Fe; atomic no: 26; atomic wt: 55.847; valency: 2,3,4, or 6; relative density: 7.874; melting pt: 1538°C; boiling pt: 2862°C: See also steel, cast iron, wrought iron, pig iron Related adjectives: ferric, ferrous Related prefix: ferro-
(as modifier): iron railings
any of certain tools or implements made of iron or steel, esp for use when hot: a grappling iron; a soldering iron
an appliance for pressing fabrics using dry heat or steam, esp a small electrically heated device with a handle and a weighted flat bottom
any of various golf clubs with narrow metal heads, numbered from 1 to 9 according to the slant of the face, used esp for approach shots: a No. 6 iron
an informal word for harpoon (def. 1)
US slang a splintlike support for a malformed leg
great hardness, strength, or resolve: a will of iron
astronomy short for iron meteorite
See shooting iron
strike while the iron is hot to act at an opportune moment
very hard, immovable, or implacable: iron determination
very strong; extremely robust: an iron constitution
cruel or unyielding: he ruled with an iron hand
an iron fist a cruel and unyielding attitude or approach: See also velvet (def. 6)
to smooth (clothes or fabric) by removing (creases or wrinkles) using a heated iron; press
(tr) to furnish or clothe with iron
(tr) rare to place (a prisoner) in irons
- ironer, noun
- ironless, adjective
- ironlike, adjective
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
Scientific definitions for iron
A silvery-white, hard metallic element that occurs abundantly in minerals such as hematite, magnetite, pyrite, and ilmenite. It is malleable and ductile, can be magnetized, and rusts readily in moist air. It is used to make steel and other alloys important in construction and manufacturing. Iron is a component of hemoglobin, which allows red blood cells to carry oxygen and carbon dioxide through the body. Atomic number 26; atomic weight 55.845; melting point 1,535°C; boiling point 2,750°C; specific gravity 7.874 (at 20°C); valence 2, 3, 4, 6. See Periodic Table. See Note at element.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Other Idioms and Phrases with iron
In addition to the idioms beginning with iron
- iron hand
- iron out
- irons in the fire, too many
- pump iron
- strike while the iron's hot
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.