prolongable

== English == === Etymology === From prolong + -able. === Adjective === prolongable (comparative more prolongable, superlative most prolongable) Capable of being prolonged, extended, or lengthened. === References === William Dwight Whitney, Benjamin Eli Smith, editors (1895–1910), “prolongable”, in The Century Dictionary and Cyclopedia: […], New York, N.Y.: The Century Co., →OCLC. “prolongable”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.