dis·crim·i·nant (d -skrm  -nnt)n. An expression used to distinguish or separate other expressions in a quantity or equation. |
discriminant [dɪˈskrɪmɪnənt]
n
(Mathematics) an algebraic expression related to the coefficients of a polynomial equation whose value gives information about the roots of the polynomial b2 - 4ac is the discriminant of ax2 + bx + c = 0
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