Digit and Significant digit

Digit noun - A character used to represent a mathematical value.

Significant digit and digit are semantically related. In some cases you can replace phrase "Significant digit" with "Digit", this terms are similar.

Nearby Words: digital, digitize, digitise, digitization, digitate

Significant digit noun - 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).

Digit and significant digit are semantically related. You can use "Digit" instead a noun phrase "Significant digit".