Definition that contains square root
- imaginary (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
- imaginary part the part of a complex number that has the square root of -1 as a factor
- complex number (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
- imaginary part of a complex number the part of a complex number that has the square root of -1 as a factor
- complex quantity (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
- standard deviation the square root of the variance
- imaginary number (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1