least significant digit

American  

noun

1. the digit farthest to the right in a number. LSD

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Example Sentences

With reals, on the other hand, you start with the least significant digit, and you’re out of luck if you have a number such as π with an infinite number of digits.

From Scientific American

Two common conventions in the placement of the binary point are: The binary point is to the right of the least significant digit, thus, numbers represent integers.The binary point is to the right of the sign digit, thus the numbers represent a fraction which lies between ±1.

From Project Gutenberg