Source : Webster's Revised Unabridged Dictionary (1913)

Stratarithmetry \Strat`a*rith"me*try\, n. [Gr. ? army + ? number
   + -metry.] (Mil.)
   The art of drawing up an army, or any given number of men, in
   any geometrical figure, or of estimating or expressing the
   number of men in such a figure.