Function: adjective
Date: 1907
1 : having a positive value for all values of the constituent variables < positive definite quadratic forms>
2 of a matrix : having the characteristic roots real and positive
POSITIVE DEFINITE
Meaning of POSITIVE DEFINITE in English
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012