Diffusion
noun, verbal noun
When something reaches normal, it has finished diffusion. Normal things aren't all bunched up and concentrated. Normal things are spread out nice and evenly, via diffusion.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
トーフグ思想を普及するための歌を作曲しました。
I made a song to spread Tofugu-ism.