# digit

If you want to sound smart, you can refer to your finger, thumb, or toe as a digit. Each of the numbers from 0 to 9 is another kind of digit.

Although your pinkie toe may seem to be completely unrelated to the number three, each is a kind of digit. In fact, the practice of calling numbers digits comes from the digits on your hands — specifically, the habit of counting to ten on your fingers. The Latin root word digitus means "finger or toe," and English borrowed from this to mean "number."

Definitions of digit
1. noun
a finger or toe in human beings or corresponding body part in other vertebrates
synonyms: dactyl
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types:
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minimus
the fifth digit; the little finger or little toe
finger
any of the terminal members of the hand (sometimes excepting the thumb)
toe
one of the digits of the foot
pollex, thumb
the thick short innermost digit of the forelimb
forefinger, index, index finger
the finger next to the thumb
annualry, ring finger
the third finger (especially of the left hand)
middle finger
the second finger; between the index finger and the ring finger
little finger, pinkie, pinky
the finger farthest from the thumb
big toe, great toe, hallux
the first largest innermost toe
hammertoe
a deformed toe which is bent in a clawlike arch
little toe
the fifth smallest outermost toe
type of:
appendage, extremity, member
an external body part that projects from the body
2. noun
one of the elements that collectively form a system of numeration
“0 and 1 are digits
synonyms: figure
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binary digit
either 0 or 1 in binary notation
octal digit
a digit from 0 to 7 in octal notation
decimal digit
a digit from 0 to 9 in decimal notation
duodecimal digit
a digit from 0 to 11 in duodecimal notation
a digit from 0 to 15 in hexadecimal notation
significant digit, significant figure
any digit of a number that is known with certainty; any digit of a number beginning with the leftmost non-zero digit and ending with the rightmost non-zero digit (or a zero considered to be the exact value)
0, cipher, cypher, nought, zero
a mathematical element that when added to another number yields the same number
1, I, ace, one, single, unity
the smallest whole number or a numeral representing this number
2, II, deuce, two
the cardinal number that is the sum of one and one or a numeral representing this number
3, III, deuce-ace, leash, tercet, ternary, ternion, terzetto, three, threesome, tierce, trey, triad, trine, trinity, trio, triplet, troika
the cardinal number that is the sum of one and one and one
4, IV, Little Joe, four, foursome, quadruplet, quartet, quatern, quaternary, quaternion, quaternity, tetrad
the cardinal number that is the sum of three and one
5, Little Phoebe, Phoebe, V, cinque, fin, five, fivesome, pentad, quint, quintet, quintuplet
the cardinal number that is the sum of four and one
6, Captain Hicks, VI, half a dozen, hexad, sestet, sextet, sextuplet, sise, six, sixer
the cardinal number that is the sum of five and one
7, VII, heptad, septenary, septet, seven, sevener
the cardinal number that is the sum of six and one
the cardinal number that is the sum of seven and one
9, IX, Nina from Carolina, ennead, nine, niner
the cardinal number that is the sum of eight and one
a singular metaphysical entity from which material properties are said to derive
singleton
a single object (as distinguished from a pair)
craps, snake eyes
expressions used when when two dice are thrown and both come up showing one spot
brace, couple, couplet, distich, duad, duet, duo, dyad, pair, span, twain, twosome, yoke
two items of the same kind
type of:
integer, whole number
any of the natural numbers (positive or negative) or zero
3. noun
the length of breadth of a finger used as a linear measure
synonyms:
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type of:
linear measure, linear unit
a unit of measurement of length
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