英语词汇“usnin”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	usnin
释义	usnin Chem.\|ˈʌsnɪn\| Also -ine. [f. usn-ea + -in¹.] Usnic acid. 1861H. Macmillan Footn. fr. Page Nat. 82 Alpine lichens generally are more or less of a brown or black colour. This peculiarity seems to be owing to the presence of usnine or usnic acid.1867Brande & Cox Dict. Sci., etc. III. 912/2 Usnin or Usnic Acid..forms yellow crystals, which with great difficulty are fused like a resin.
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