digit

名词 digit:

1. one of the elements that collectively form a system of numeration
   同义词：figure
2. the length of breadth of a finger used as a linear measure
   同义词：finger, fingerbreadth, finger's breadth
3. a finger or toe in human beings or corresponding body part in other vertebrates
   同义词：dactyl

1. The number represented by the digit or digits in2.
   在释文2。中所说的由一位或几位数字表示的数。
2. Pertaining to an operation involving more than one digit.
   用于修饰或说明涉及多位数字的运算。
3. A binary-coded decimal code for representing decimal numbers in which each decimal digit is represented by seven binary digits which are coefficients of8,6,4,2,0,1,0, respectively.
   用于表示十进制数的一种二进制编码的十进制码，其中每位十进制数用七位二进制数来表示，它们分别是8,6, 4,2, 0,1和0的系数。五－二码表如下：
4. In the decimal form of a number, a digit that is not significant.
   占位符号在一个数的小数形式中，没有意义的数字

dig.it

n.（名词）

A human finger or toe.
人的手指或足趾
A corresponding part in other vertebrates.
手指，足趾：其它脊椎动物相对应的部位
A unit of length derived from the breadth of a finger and equal to about ô of an inch (2.0 centimeters).
指宽，指幅：从手指宽度派生出的长度单位，等于ô英寸（2.0厘米）

One of the ten Arabic number symbols, 0 through 9.
数字：十个阿拉伯数字符号从0到9中的任意一个
Such a symbol used in a system of numeration.
位（数）：用于计算系统的符号

来源：
Middle English
中古英语
from Latin digitus [finger, toe] * see deik-
源自 拉丁语 digitus [手指，足趾] *参见 deik-