G4457–πώρωσις–pōrōsis

And when he had looked around on them with anger, being grieved for the hardness of their hearts, he saith to the man, Stretch forth thy hand. And he stretched it out: and his hand was restored whole as the other.

πωρώσει pōrōsei “hardness”

For I would not, brethren, that ye should be ignorant of this mystery, (lest ye should be wise in your own conceits) that blindness in part hath happened to Israel, until the fullness of the Gentiles shall be come in.

πώρωσις pōrōsis “a hardening”

Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart:

πώρωσιν pōrōsin “hardness”