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Origin and history of triplicate

triplicate(adj.)

early 15c., "triple, threefold, treble," from Latin triplicatus, past participle of triplicare "to triple," from tri- "three" (see tri-) + plicare "to fold" (from PIE root *plek- "to plait").

triplicate(v.)

"multiply by three, make threefold, produce a third corresponding to a first and second," 1620s, from Latin triplicatus (see triplicate (adj.)). Related: Triplicated; triplicating; triplication.

Entries linking to triplicate

Proto-Indo-European root meaning "to plait." It is an extended form of root *pel- (2) "to fold."

It might form all or part of: accomplice; application; apply; complex; complexion; complicate; complication; complicity; deploy; display; duplex; duplicate; duplicity; employ; explicate; explicit; exploit; flax; implex; implicate; implication; implicit; imply; multiply; perplex; perplexity; plait; plash (v.2) "to interlace;" pleat; -plex; plexus; pliable; pliant; plie; plight (n.1) "condition or state;" ply (v.1) "work with, use;" ply (v.2) "to bend; ply (n.) "a layer, fold;" replica; replicate; replication; reply; simplex; splay; triplicate.

It might also be the source of: Sanskrit prasna- "turban;" Greek plekein "to plait, braid, wind, twine," plektos "twisted;" Latin plicare "to lay, fold, twist," plectere (past participle plexus) "to plait, braid, intertwine;" Old Church Slavonic plesti "to braid, plait, twist," Russian plesti; Gothic flahta "braid;" Old Norse fletta, Old High German flehtan "to plait;" Old English fleax "cloth made with flax, linen."

word-forming element of Latin and Greek origin meaning "three, having three, once every three," from Latin tres (neuter tria) or Greek trias, treis "three" (see three). "The i, etymologically short in Greek and Latin, was in Latin sometimes lengthened, esp. in numerals" [OED, 1989].

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    Trends of triplicate

    adapted from books.google.com/ngrams/ with a 7-year moving average; ngrams are probably unreliable.

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