tertiate

CIDE DICTIONARY

tertiate, 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. Johnson. [1913 Webster]
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]