Arrangement
Sorting, Organization, Adjustment
noun, する verb
When you arrange something according to reason, the result is an arrangement.
せいり
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
このアパートの住民の部屋はみんなきちんと整理されています。
This apartment's residents' rooms are all neatly arranged.
整理整とんすることは大切です。
Organizing well is important.
修学旅行で撮った写真を整理しました。
I organized the photos from my field trip.