One entry found for plus/minus sign.

Main Entry: plus/minus sign
Function: noun
: the sign ± used to mean that a quantity (as 2 in "the square root of 4 is ± 2") takes on both a positive and a negative value or to indicate a plus or minus quantity (as 5 in "the scale was accurate to ± 5 grams") -- called also plus/minus symbol

Pronunciation Symbols