Let's see if I can explain this "logically".
'Intension" in logic means "the properties possessed by all the objects in a term's extension." O.K. "Extension" means the "class of all particular objects to which a term refers; denotation" (These definitions from Webster's New World Cololege Dictionary.)
Now then, we are really talking about "connotation." In logic, the definition of "connotation" is the same as that of "intension".
Sooo.. we look for an adjective in Spanish of "connotation" = "connotativo". That is what I would use without seeing your specific context. Good luck!

Ojala que te ayude! Suerte!

En Simon & Schuster encuentro: Intension (when refered to logic)= contenido, comprensión. Espero sea de ayuda.

I have seen both the terms "intensión" and "intensional" in texts on Linguistics, like translations of Umberto Eco's works and others. They look rather awkward, but they are used in this field.
Hope this helps, good luck

I do agree with randerso and his entire answer.
In Logic, this is the best translation.
Good luck.