altisonous

== English == === Etymology === Learned borrowing from Latin altisonus. === Adjective === altisonous (comparative more altisonous, superlative most altisonous) Alternative form of altisonant. === References === “altisonous”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.