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Colonizing or thriving in areas that have been disturbed, as by fire or cultivation.
A species, especially a plant, that colonizes or thrives in disturbed areas.

[New Latin rūderālis, from Latin rūdus, rūder-, rubble, broken stones; possibly akin to German Grieß, grit, semolina, Lithuanian grūdas, grain, and Russian gruda, pile.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Botany) a plant that grows on waste ground
(Botany) growing in waste places
[C19: from New Latin rūderālis, from Latin rūdus rubble]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈru dər əl)
1. (of a plant) growing in waste places, along roadsides, or in rubbish.
2. a ruderal plant.
[1855–60; < New Latin rūderālis < Latin rūder- (s. of rūdus broken stone, rubble]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in periodicals archive ?
The previous crop in Mendong was rice (Oryza sativa L.) with a predominance of ruderal species such as Chromolaena odorata L.
CSR (competitor, stress tolerator, ruderal) model: This model links a plant's strategy, or syndrome, with functional performance and population biology, and recognizes strategies of evolutionary specialization associated with stress responses (Grime, 1989).
La flora exotica ruderal del Parque Nacional La Campana, Region de Valparaiso, Chile central.
A total of 15 different bumblebee species were photographed by gardeners, including the ruderal bumblebee and moss carder bee which are listed as national conservation priorities.
The area in question was around half a hectare, the statement added, on "unmanaged poor semiimproved neutral grassland, encroached by tall ruderal herbs and scrub".
La planta fue recolectada esteril, como elemento ruderal en la Provincia de Chaco, en ocasion de un viaje que efectuara el primer autor al noreste de Argentina y su frontera con Bolivia en el ano 1995.
Southwest USA, Mexico, and Central-west South-america; 2250-2600 masl Dalea Eragrostis Plant Trait humilis mexicana Plant length (cm) (1,2,9) 10-40 Up to 60 Flower color (1,2) Pink or white NA Flowering period (1,2,3,4,5,7,8,9) Aug-Nov Jun-Nov Distribution (2,3,4,5,6,7,9,10) Ruderal weed Ruderal weed frequent on found in xeric roads and shrublands temporary and disturbed crops.
Prakash (1975) recorded this species from the ruderal habitat as well as from the crop fields.