1. 决定物;决定因素
A determinant of something causes it to be of a particular kind or to happen in a particular way.

1. a determining or causal element or factor

e.g. education is an important determinant of one's outlook on life

Synonym: determinerdeterminativedetermining factorcausal factor

2. a square matrix used to solve simultaneous equations

3. the site on the surface of an antigen molecule to which an antibody attaches itself

Synonym: antigenic determinantepitope