Roget's Thesaurus: Entry 93 (Triplication)

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#93. Triplication. -- N. triplication, triplicity[obs]; trebleness[obs], trine.

V. treble, triple; triplicate, cube.

Adj. treble, triple; tern, ternary; triplicate, threefold, trilogistic[obs]; third; trinal[obs], trine.

Adv. three times, three fold; thrice, in the third place, thirdly; trebly &c. adj.