triplicate

adj

1. (not-comparable)Made thrice as much; threefold; tripled.

noun

1. (uncountable)The making of three identical copies of something.

   “The prime minister is a determined centralist in thrall to a tactless and obsessive aide, Cummings, whose skill seems limited to writing slogans in triplicate.”

2. (countable)Each of a set of three identical objects or copies.

   “Among the six bottles, three of them were pumped every 30 minutes and the three others every 60 minutes. This provided a triplicate of each condition (30 or 60 minutes idle time between pumping).”

verb

1. (transitive)To make three identical copies of something.

   “Suppose we duplicate actual numbers that are out in circulation, and perhaps hold over the originals? We can triplicate, quadruple, multiply by a hundred times if it suits our purpose.”

2. (transitive)To triple.