basaltiform

== English == === Etymology === From basalt +‎ -iform. === Adjective === basaltiform (comparative more basaltiform, superlative most basaltiform) (archaic, geology) In the form of basalt; columnar. === References === “basaltiform”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.