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Furthermore, what does sub number mean?

noun. a numeral or group of numerals. one of a series of things distinguished by or marked with numerals. a certain collection, company, or quantity not precisely reckoned, but usually considerable or large: I've gone there a number of times.

Also Know, what is a subscript and what does it mean? A subscript is a character, usually a letter or number, that's printed slightly below and to the side of another character. Subscripts are commonly used in chemical formulas. It's closely related to superscript, when a letter or number is printed above another character.

In this regard, what does a sub 0 mean?

adjective. indicating or recording lower than zero on some scale, especially on the Fahrenheit scale: a week of sub-zero temperatures.

Does sub mean below?

a prefix occurring originally in loanwords from Latin (subject; subtract; subvert; subsidy); on this model, freely attached to elements of any origin and used with the meaning “under,” “below,” “beneath” (subalpine; substratum), “slightly,” “imperfectly,” “nearly” (subcolumnar; subtropical), “secondary,” “subordinate”