Most significant bit

Alternatively known as the alt bit, high bit, meta bit, or senior bit, the MSB (most significant bit) is the highest bit in binary, located at the far-left end of a string. For example, in the number "01001001," the most significant bit is the "0" at the beginning of the line.

Binary, Bit, Computer abbreviations, Least significant bit, Most significant byte, Most significant character, Most significant digit, MSB