The term is more commonly used to apply to orders on another country, being made in triplicate.
Bills of exchange are usually drawn in duplicate and sometimes in triplicate.
Herewith you have in triplicate and copy of my former letters.
He made a copy of the indent in triplicate, as well as an office copy.
Similar cones or cylinders have to one another the triplicate ratio of that which the diameters of their bases have.
They are like a three-headed Charles I—or a triplicate Geibel.
This dispatch was sent in triplicate, by different messengers.
And with the lock they had supplied two keys; they had not retained a triplicate.
We simply have taken the lessons learned in everyday trading, have tabulated and filed them in triplicate.
These requisitions should be made in duplicate or triplicate.