The meaning of subzero is: any temperature lower than zero.

subzero's identification number is 425983

Okay people here's an answer in math we learned that the Latin word sub in subzero ment under so we learned what subzero ment there u go :-D

Below zero such as in temperature and a funny thing is that SubZero is a character from the Mortal Kombat series.

raiden could win but subzero could also win lightning might be better than ice but subzero could freeze him up and and punch him into crystals