Etymology: Middle French, from Late Latin triplication-, triplicatio action of tripling, from Latin triplicatus + -ion-, -io -ion
1.
a. : a legal pleading showing why the last pleading of the opposing party should not be given legal effect : an equitable rebutter
b. : the plaintiff's reply to the defendant's rejoinder in Roman and civil law resembling the surrejoinder in common law
c. : the defendant's answer to the plaintiff's replication in early English law
2. : the action of tripling or making threefold or adding three together
3. : something that is triplicated or threefold
Useful english dictionary. 2012.