Also called iron rust . the red or orange coating that forms on the surface of iron when exposed to air and moisture, consisting chiefly of ferric hydroxide and ferric oxide formed by oxidation.
any film or coating on metal caused by oxidation.
a stain resembling this coating.
any growth, habit, influence, or agency tending to injure, deteriorate, or impair the mind, character, abilities, usefulness, etc.
any of several diseases of plants, characterized by reddish, brownish, or black pustules on the leaves, stems, etc., caused by fungi of the order Uredinales.
Also called rust fungus . a fungus causing this disease.
any of several other diseases of unknown cause, characterized by reddish-brown spots or discolorations on the affected parts.
reddish yellow, reddish brown, or yellowish red.
to become or grow rusty, as iron.
to contract rust.
to deteriorate or become impaired, as through inaction or disuse.
to become rust-colored.
to affect with rust.
to impair as if with rust.
to make rust-colored.
having the color rust.
rust out, (of metal pipes, machinery, etc.) to decay and become unusable through the action of rust.
rust through, to develop holes, breaks, or the like, because of rust.
rust together, to join two metal pieces, as iron pipes, by causing the joint to rust.
- de·rust, verb (used with object)
- un·rust, verb (used with object)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use rust in a sentence
This chainmail is rust-proof, and smooth enough it won’t damage any of the surfaces it can be used for.Metal scrubbers to keep your cast iron skillet in pristine condition | PopSci Commerce Team | September 23, 2020 | Popular-Science
Their invention is marked by layers of rust— banded iron formations—as iron reacted with the available oxygen.
Like many former industrial hotspots across the country, Kenosha would have to evolve to cope with the realities of a 21st century economy, or else rust away.Kenosha’s unusual economic evolution made it the perfect political flashpoint | reymashayekhi | September 5, 2020 | Fortune
The cutter is made from anti-rust stainless steel and can go in the dishwasher.Pizza cutters that will get you the slice of your dreams | PopSci Commerce Team | September 2, 2020 | Popular-Science
Book Your Data does a great job of showing how rust badges and reviews featuring loyal and even popular customers can establish trust with new visitors right away.Nine tips to increase the average order value (AOV) of your ecommerce store | Kevin Payne | June 24, 2020 | Search Engine Watch
Tom rust, a spokesman for the House Ethics Committee, declined to comment to The Daily Beast.
Blister rust is like having the flu; the pine beetle is like fast acting leukemia.
Briefly, blister rust is an Asian fungus introduced from Europe to America around 1900.
Still, there is hope for the Republicans in the rust Belt—if they can give the public a reason to vote for them.Cleveland, LeBron James, and the 2016 Republican Convention | Lloyd Green | July 14, 2014 | THE DAILY BEAST
Cenicafé researchers “anticipated climate change would create a scenario where rust was a real pandemic threat,” says Rhinehart.
It was encircled by a ditch, but the drawbridge was down, and the rust on its chains argued that long had it been so.St. Martin's Summer | Rafael Sabatini
The Dimbula picked up her pilot and came in covered with salt and red rust.Kipling Stories and Poems Every Child Should Know, Book II | Rudyard Kipling
Great pains have been taken, and the great rust thereof is not gone out, not even by fire.The Bible, Douay-Rheims Version | Various
Some seasons hardly any rust can be discovered on the leaves, and if any spots are found they are fixed and do not spread.Tobacco; Its History, Varieties, Culture, Manufacture and Commerce | E. R. Billings.
Many theories have been advanced in regard to the (p. 471) cause of rust and how to prevent it.Tobacco; Its History, Varieties, Culture, Manufacture and Commerce | E. R. Billings.
British Dictionary definitions for rust
a reddish-brown oxide coating formed on iron or steel by the action of oxygen and moisture
Also called: rust fungus plant pathol
any basidiomycetous fungus of the order Uredinales, parasitic on cereal plants, conifers, etc
any of various plant diseases characterized by reddish-brown discoloration of the leaves and stem, esp that caused by the rust fungi
a strong brown colour, sometimes with a reddish or yellowish tinge
(as adjective): a rust carpet
any corrosive or debilitating influence, esp lack of use
to become or cause to become coated with a layer of rust
to deteriorate or cause to deteriorate through some debilitating influence or lack of use: he allowed his talent to rust over the years
- rustless, 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 rust
Any of the various reddish-brown oxides of iron that form on iron and many of its alloys when they are exposed to oxygen in the presence of moisture.
Any of various basidiomycete fungi that are parasitic on plants and produce reddish or brownish spots on leaves. Rusts attack a wide variety of plants and can cause enormous damage to crops.
Any of the various plant diseases caused by these fungi.
To become corroded or oxidized.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.