Ter"ti*ate (?), v. t. [L. tertiatus, p.p. of tertiare to do for the third time, fr. tertius the third.]
To do or perform for the third time.
[Obs. & R.]
To examine, as the thickness of the metal at the muzzle of a gun; or, in general, to examine the thickness of, as ordnance, in order to ascertain its strength.
© Webster 1913.