| thuyin | <chemistry> A substance extracted from trees of the genus Thuja, or Thuya, and probably identical with quercitrin. Alternative forms: thujin. Source: Websters Dictionary (01 Mar 1998) |
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| thuyol | C10H16O;the chief constituent of cedar leaf oil; a stimulant similar to camphor. Synonym: absinthol, tanacetol, tanacetone, thujol, thuyol, thuyone. (05 Mar 2000) |