heliciform

== English == === Etymology === From helix +‎ -iform. === Adjective === heliciform (comparative more heliciform, superlative most heliciform) Having the form of a helix; spiral; helical. === References === “heliciform”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.