Triple is from Old French triple or directly from Latin triplus ('threefold'), from tri- ('three') + -plus ('-fold'). Important recorded forms include triplus (Latin), tri (Latin), and plus (Latin). Morphologically, the word preserves a built structure whose named elements carry the historical sense into English. The modern sense continues the older lexical line without requiring a separate origin. In current use it covers consisting of three parts or three times as great. The wider family includes derived forms such as tripling, triply, and triplet and related words such as triplicate, trio, and triad.