(organic chemistry) The diacetylenic furan 2-[(1E,7E)-nona-1,7-dien-3,5-diynyl]furan

(organic chemistry) The benzofuran (4aS,8aR)-3,8a-dimethyl-5-methylidene-4,4a,6,7,8,9-hexahydrobenzo[f][1]benzofuran present in rhizomes of Atractylodes

plural of atracid

Any of the venomous Australian mygalomorph spiders of the family Atracidae; a funnel-web spider.

atrabilious