natural rubber

noun
rubber1 ( def 1 ).
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WordNet
natural rubber

noun
an elastic material obtained from the latex sap of trees (especially trees of the genera Hevea and Ficus) that can be vulcanized and finished into a variety of products [syn: rubber
WordNet® 3.0, © 2006 by Princeton University.
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Example sentences
High demand for natural rubber has driven up prices.
He says synthetic rubber cannot be used, as there is a strong tradition of using natural rubber.
Natural rubber and jute are displaced by new synthetic materials.
For these reasons, domestic sources of natural rubber have been sought for several decades.
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