buna
English Thesaurus
1. made by polymerizing butadiene (noun.substance)
| hypernym | : | rubber, synthetic rubber, |
| definition | : | any of various synthetic elastic materials whose properties resemble natural rubber (noun.substance) |
| substance holonym | : | butadiene, |
| definition | : | a gaseous hydrocarbon C4H6; used in making synthetic rubbers (noun.substance) |
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