Definition

1. Noun:
   • A digit from 0 to 7 in octal notation: An octal digit is any one of the eight numerical symbols (0, 1, 2, 3, 4, 5, 6, 7) used in the base-8 numeral system, known as octal notation.

Usage

• The term is used specifically in the context of computing, digital systems, and mathematics when referring to the individual symbols that make up an octal number.
• It describes a single character position within an octal numeral.

Examples

• Noun:
  • In the octal number 752, the first octal digit is 7.
  • Each octal digit can be represented by exactly three binary digits (bits).
  • The system only accepts valid octal digits from 0 through 7.

Advanced Usage

• Positional Value: In an octal number, the value of an depends on its position, multiplied by powers of 8.
  • In the octal number 45, the octal digit 4 represents 4 × 8¹ (32), and the octal digit 5 represents 5 × 8⁰ (5).

Variants and Related Words

• Octal (adjective): Relating to or using a base-8 number system.
  • The file permissions were set using octal notation.
• Digit (noun): Any of the numerals from 0 to 9, especially when forming part of a number. (This is the general term, while is a specific type.)
  • A binary digit is called a bit.

Synonyms

• Base-8 digit: A less common but technically accurate synonym.
• Octit: A rare, specialized synonym sometimes used in computing.

Related Phrases

• Octal numeral/system: The complete number system that uses .
  • The value was stored in an octal system.
• Most significant octal digit: The leftmost, highest-value digit in an octal number.
  • The most significant octal digit was corrupted in the data transfer.
• Least significant octal digit: The rightmost, lowest-value digit in an octal number.
  • Change the least significant octal digit to increment the value by one.

Noun

1. a digit from 0 to 7 in octal notation