MUSTER n.
An assembling or review of troops, as for parade, verification of numbers, inspection, exercise, or introduction into service. The hurried muster of the soldiers of liberty. Hawthorne. See how in warlike muster they appear, In rhombs, and wedges, and half-moons, and wings. Milton.
NAPIER'S BONES; NAPIER'S RODS n.
f rods, made of bone or other material, each divided into nine spaces, and containing the numbers of a column of the multiplication table; -- a contrivance of Baron Napier, the inventor of logarithms, for facilitating the operations of multiplication and division.
NATURAL a.
in, or referred to, some system, in which the base is 1; -- said or certain functions or numbers; as, natural numbers, those commencing at 1; natural sines, cosines, etc., those taken in arcs whose radii are 1.
O n.
ark of triple time, from the notion that the ternary, or number 3, is the most perfect of numbers, and properly expressed by a circle, the most perfect figure. O was also anciently used to represent 11: with a dash over it (O O, n.; pl. O's or Oes (.
ODD a.
capable of being evenly paired, one unit with another; as, 1, 3, 7, 9, 11, etc., are odd numbers. I hope good luck lies in odd numbers. Shak.