To make something seem more connected to the spirit or to make something seem more important or meaningful in a spiritual way.
Spiritualizing can make things seem more special or important. It can also make people feel calm and peaceful.
Examples:
She is spiritualizing the practice of meditation.
Spiritualizing nature helps people feel connected to the earth.
He is spiritualizing the idea of helping others.
They are spiritualizing the act of sharing food.
The old book is spiritualizing the idea of love.
I am spiritualizing my room to make it feel peaceful.