Significand
Part of a number in scientific notation / From Wikipedia, the free encyclopedia
The significand[1] (also coefficient,[1] sometimes argument, or more ambiguously mantissa,[2] fraction,[3][4][nb 1] or characteristic[5][2]) is the first (left) part of a number in scientific notation or related concepts in floating-point representation, consisting of its significant digits. Depending on the interpretation of the exponent, the significand may represent an integer or a fractional number.