hexacycle

== English == === Etymology === From hexa- +‎ cycle. === Noun === hexacycle (plural hexacycles) (chemistry) Any hexacyclic compound Aldrichimica Acta Volume 30 No 4 (pdf) from Sigma-Aldrich The corresponding 1,3,4-thiadiazole 108 produces the thia-bridged hexacycle 109 on treatment with norbornadiene 1 either thermally or under high pressure.