positive definite

adjective Mathematics.

(of a quadratic form) positive for all real values of the variables, where the values are not all zero.
(of a matrix) displaying the coefficients of a positive definite quadratic form.

Origin of positive definite

First recorded in 1905–10
Related formspositive definiteness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019