G4457–πώρωσις–pōrōsis

When he had looked around at them with anger, being grieved at the hardening of their hearts, he said to the man, "Stretch out your hand." He stretched it out, and his hand was restored as healthy as the other.

πωρώσει pōrōsei “hardness”

For I don't desire, brothers, to have you ignorant of this mystery, so that you won't be wise in your own conceits, that a partial hardening has happened to Israel, until the fullness of the Gentiles has come in,

πώρωσις pōrōsis “a hardening”

being darkened in their understanding, alienated from the life of God, because of the ignorance that is in them, because of the hardening of their hearts;

πώρωσιν pōrōsin “hardness”