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单词 rubian
释义

Definition of rubian in English:

rubian

noun ˈruːbɪən
Chemistry rare, historical
  • A brownish-yellow resinous substance isolated from madder root, subsequently shown to consist of a mixture of glycosides of alizarin and other compounds.

Origin

Mid 19th century. From classical Latin rubia madder + -an, after German Rubian.

Definition of rubian in US English:

rubian

nounˈruːbɪən
Chemistry rare, historical
  • A brownish-yellow resinous substance isolated from madder root, subsequently shown to consist of a mixture of glycosides of alizarin and other compounds.

Origin

Mid 19th century. From classical Latin rubia madder + -an, after German Rubian.

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