What is another word for first digit?
Pronunciation: [fˈɜːst dˈɪd͡ʒɪt] (IPA) 
The "first digit" refers to the initial numeral in a numerical sequence or expression. Quite often, this term is used in mathematical contexts. There are several synonyms that can be used instead of this term. For example, the "leading digit" refers to the digit that appears first in a number or sequence. The "primary digit" is also an accurate synonym for the first digit, as it refers to the key or foremost numeral in a set of numbers. Additionally, the "top digit" and the "beginning digit" can also be used as alternative phrases for the "first digit" in mathematical applications.
