digit

/'didʤit/
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Definition
  1. Noun:
    • A finger or toe: In humans and other vertebrates, a digit is one of the terminal divisions of a limb, such as a finger or thumb on the hand, or a toe on the foot.
    • A linear unit of measurement: Historically, a digit referred to a unit of length based on the width of a finger, approximately 3/4 of an inch.
    • A single symbol in a numeral system: In mathematics and computing, a digit is any of the symbols from 0 to 9 used to represent numbers in the decimal system, or the symbols (e.g., 0 and 1) used in other bases like binary.
Examples of Usage
  • Noun (Anatomy):
    • Humans typically have five digits on each hand.
    • The injury affected the digit on his left foot.
  • Noun (Measurement):
    • The ancient manuscript described a distance of ten digits.
  • Noun (Numeral):
    • The number 583 is a three-digit number.
    • In binary code, information is stored as a sequence of digits, 0s and 1s.
Advanced Usage
  • "Check digit": A digit added to a number for error detection, often used in identification numbers like credit cards.
    • The last digit of your account number is a check digit used for verification.
  • "Significant digit": A digit in a number that carries meaning contributing to its precision.
    • When rounding to two significant digits, 3.14159 becomes 3.1.
Variants and Related Words
  • Digital (adj): Relating to or using digits, especially binary digits in computing (e.g., ); or relating to fingers or toes (e.g., ).
  • Digitize (verb): To convert analog information into a digital (numerical) format.
    • The library plans to digitize its entire collection of historical films.
Synonyms
  • Finger/Toe (for the anatomical sense).
  • Numeral (for the mathematical symbol sense).
  • Figure (for the mathematical symbol sense, as in "a single figure").
Related Phrases
  • "Double-digit": Referring to a number from 10 to 99.
    • The company reported double-digit growth this quarter.
  • "Digit sum": The sum of all the digits in a number.
    • The digit sum of 123 is 6 (1+2+3).
Noun
  1. a finger or toe in human beings or corresponding body part in other vertebrates
  2. the length of breadth of a finger used as a linear measure
  3. one of the elements that collectively form a system of numeration
    • 0 and 1 are digits

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