Reference: Upharsin

And they are dividing, a Chaldee word, an active plural form with the conjunction prefixed; while PERES or PHARES, from the same root, is a passive participle, and means divided, Da 5:25,28.

and they divide, one of the words written by the mysterious hand on the wall of Belshazzar's palace (Da 5:25). It is a pure Chaldean word. "Peres" is only a simple form of the same word.

Uphar'sin

See MENE.