thysanurous

== English == === Etymology === Thysanura +‎ -ous === Adjective === thysanurous (not comparable) (zoology, obsolete) Of or pertaining to the Thysanura (now Zygentoma), an order of insects with three long caudal filaments. === References === “thysanurous”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.