Tertiate

Tertiate Ter"ti*ate, v. t. [L. tertiatus, p. p. of tertiare to do for the third time, fr. tertius the third.] 1. To do or perform for the third time. [Obs. & R.] --Johnson. [1913 Webster]

2. (Gun.) 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. [1913 Webster]