Definition of most significant bit in English:

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most significant bit

(abbreviation MSB)


The bit in a binary number that is of the greatest numerical value.
Example sentences
  • Specify the number of most significant bits to output in the number of bits parameter.
  • Reverse bit direction, most significant bit to least significant bit, is used to communicate data to display devices and in many data compression encoding methods.
  • Class B addresses use the first two octets to represent the network number, with the restriction that the two most significant bits of the first octet be 10.

For editors and proofreaders

Syllabification: most sig·nif·i·cant bit

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