1) Ebonite 2) Vulcanite
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https://www.crosswordclues.com/clue/caoutchouc
1) Gum elastic 2) India rubber 3) Latex 4) Pure rubber 5) Rubber
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https://www.crosswordclues.com/clue/caoutchouc
• (n.) A tenacious, elastic, gummy substance obtained from the milky sap of several plants of tropical South America (esp. the euphorbiaceous tree Siphonia elastica or Hevea caoutchouc), Asia, and Africa. Being impermeable to liquids and gases, and not readly affected by exposure to air, acids, and alkalies, it is used, especially when vulcani...
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http://thinkexist.com/dictionary/meaning/caoutchouc/
An early (and unsatisfactory) method of securing single sheets by roughening the spine edges and applying a rubber cement and reinforcing with caoutchouc impregnated cloth. Popular in the middle of the nineteenth century. Possibly a forerunner to our modern perfect binding.
Found on
http://www.encyclo.co.uk/local/20208
Caout'chouc noun [ French
caoutchouc , from the South American name.] A tenacious, elastic, gummy substance obtained from the milky sap of several plants of tropical South America (esp. the euphorbiaceous tree
Siphonia elastica or
Hevea caoutchouc ), Asia, and Africa. Being impermeab...
Found on
http://www.encyclo.co.uk/webster/C/19
Caoutchouc is an elastic gummy substance, chemically a hydrocarbon, contained in the milky juice of a number of tropical trees of various orders, among the chief being the Siphonia elastica (Hevea elastica) and others of the same genus growing in South America. The name is also used as an equivalent of india-rubber, but strictly caoutchouc is only ...
Found on
http://www.probertencyclopaedia.com/browse/GC.HTM
No exact match found.
