Of the nature of or relating to an injection or one-to-one mapping.
〔数〕（与）内射（有关）的，（与）单射（有关）的
Example sentencesExamples
In 1940 he introduced the concept of an injective module, then began studying group actions in geometry.
Clearly, V is invariant under the indicated action of S n, so we obtain an injective group homomorphism [rho].
The map is also an injective homomorphism.
For example, Fld has the rather unusual property that every morphism in this category is an injective map of sets; it is easily seen that this fails for the other examples mentioned.