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Having an assignable arithmetical or numerical value or meaning; not imaginary.

ed from one or more of the preceding by a fixed law, called the law of the series; as, an arithmetical series; a geometrical series.

Proceeding by sixes; sextuple; -- applied especially to a system of arithmetical computation in which the base is six.

To subtract by arithmetical operation; to deduct. If, out of that infinite multitude of antecedent generations, we should subduce ten. Sir M. Hale.

Arithmetical subtraction. Sir M. Hale.

heet of paper . . . covered with long sums. Dickens. Algebraic sum, as distinguished from arithmetical sum, the aggregate of two or more numbers or quantities taken with regard to their signs, as + or -, according to the rules of addition in algebra; thus, the algebraic sum of -2, 8, and -1 is 5. -- In sum, in short;…

r numbers (Math.), the series of numbers formed by the successive sums of the terms of an arithmetical progression, of which the first term and the common difference are 1. See Figurate numbers, under Figurate.