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[klaw-roh-sis, kloh-] /klɔˈroʊ sɪs, kloʊ-/
an abnormally yellow color of plant tissues, resulting from partial failure to develop chlorophyll, caused by a nutrient deficiency or the activities of a pathogen.
Also called greensickness. Pathology. a benign type of iron-deficiency anemia in adolescent girls, marked by a pale yellow-green complexion.
Origin of chlorosis
1675-85; chlor-1 + -osis
Related forms
[klaw-rot-ik, kloh-] /klɔˈrɒt ɪk, kloʊ-/ (Show IPA),
chlorotically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for chlorosis


(pathol) Also called greensickness. a disorder, formerly common in adolescent girls, characterized by pale greenish-yellow skin, weakness, and palpitation and caused by insufficient iron in the body
(botany) a deficiency of chlorophyll in green plants caused by mineral deficiency, lack of light, disease, etc, the leaves appearing uncharacteristically pale
Derived Forms
chlorotic (klɔːˈrɒtɪk) adjective
Word Origin
C17: from chloro- + -osis
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
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chlorosis in Medicine

chlorosis chlo·ro·sis (klə-rō'sĭs)
A form of chronic anemia, primarily of young women, characterized by a greenish-yellow discoloration of the skin and usually associated with deficiency in iron and protein. Also called chloremia.

chlo·rot'ic (-rŏt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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chlorosis in Science
The yellowing or whitening of normally green plant tissue because of loss or decreased production of chlorophyll, often as a result of disease, insufficient light, or inadequate sources of iron and magnesium.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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