Origin of rust

before 900; (noun) Middle English; Old English rūst; cognate with German Rost; (v.) Middle English rusten, derivative of the noun; akin to red1
Related formsde·rust, verb (used with object)un·rust, verb (used with object)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for rusted

British Dictionary definitions for rusted

rust

/ (rʌst) /

noun

a reddish-brown oxide coating formed on iron or steel by the action of oxygen and moisture
Also called: rust fungus plant pathol
  1. any basidiomycetous fungus of the order Uredinales, parasitic on cereal plants, conifers, etc
  2. any of various plant diseases characterized by reddish-brown discoloration of the leaves and stem, esp that caused by the rust fungi
  1. a strong brown colour, sometimes with a reddish or yellowish tinge
  2. (as adjective)a rust carpet
any corrosive or debilitating influence, esp lack of use

verb

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 usehe allowed his talent to rust over the years
Derived Formsrustless, adjective

Word Origin for rust

Old English rūst; related to Old Saxon, Old High German rost
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

Medicine definitions for rusted

rust

[ rŭst ]

n.

Any of a group of parasitic fungi of the order Uredinales that are plant pathogens, especially of cereal grains, and that can produce allergy in humans when inhaled in large numbers.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for rusted

rust

[ rŭst ]

Noun

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.
  1. 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.
  2. Any of the various plant diseases caused by these fungi.

Verb

To become corroded or oxidized.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.