† under-treble Obs.
[under-1 6 b.]
= subtriple. So † under-triplat, -triple. Obs.
| 1430 Art of Nombryng (E.E.T.S.) 17 That triplat is to be put under the .3 next figure..And the vnder-trebille vnder the trebille. Ibid., And than most thow fynde a digit..the whiche withe his vnder-triplat..sittethe away all that is ouer his hede. Ibid. 18 It is open that the nombre proposede was a cubike nombre, And his rote a digit founde last with the vnder-triples. |