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Rhesus negative
Rhesus positive
rhetoric
rhetorical
rhetorical question
rhetorician
rheum
rheumatic
rheumatic fever
rheumatic heart disease
rheumatics
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rhizofiltration
rhi·zo·fil·tra·tion [ rzō fil tráysh'n ]


noun 
Definition:
 
use of plants in groundwater cleanup: the use of plant roots to absorb or precipitate groundwater contaminants
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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