出典:Wiktionary
From Latin quintus (“fifth”) + plicare (“to fold”); probably patterned after duplicate from Latin duplicare (“to double”).
quintuplicate (複数形 quintuplicates)
quintuplicate (三人称単数 現在形 quintuplicates, 現在分詞 quintuplicating, 過去形および過去分詞形 quintuplicated)