Dividing and portions with 分
The kanji 分 has the core meanings of divide and part.
It begins with the act of separating something into pieces. From there it grows into portions, categories, ingredients, analysis, and even “one’s share” or “one’s own part.”
Etymology
An ideogrammic compound, 分 combines 八 (“to separate”) + 刀 (“knife”), to mean separating something, as with a knife.
Breakdown
分解 (Decomposition)
分解 refers to the act or process of breaking down a single, unified entity into smaller parts or dismantling it into its constituent elements.
It combines 分 (divide) with 解 (separate) to show separating something into pieces.

Hinata dedicates the month of December to giving her home a complete cleaning.
- ひなた:
- 「お父さんがちまちま貯
( めた新聞( …」- “The old newspapers Dad's been saving forever...”
- 「これをぬるま湯
( につけてガラスを拭( くと油分( を分解( してピカピカになるんだ」- “Soak them in warm water and wipe the glass, and they cut through the grease and get it sparkling clean.”
- “The old newspapers Dad's been saving forever...”
Components
成分 (Component)
成分
It combines 成 (form) with 分 (part) to show the parts that form something.

A client tells Detective Mouri about the condition in which she found her deceased husband. Hearing the details, Conan identifies the likely poison, including the composition, the dosage required to kill, and the internal effects it has on a person. When Ran asks how he knows all this, Conan covers by saying the monster villain on the kid’s TV show he watched explained it.
- 蘭
( : - 「随分
( 丁寧( な怪人( ね… 毒( の成分( まで教( えてくれるなんて…」- “What a polite villain... Going so far as to tell the poison's composition...”
- コナン:
- 「そんな怪人
( いねーよ…」- “No such monster exists...”
Measures
五分 (Five minutes or fifty percent)
This word has two main meanings depending on how it is pronounced. 五分
It combines 五 (five) with 分 (part) to indicate a division into five parts.

At breakfast, Touya teases Sakura for stomping down the stairs like a giant monster. He finishes eating and heads out on his bike to meet his friend Yukito on their way to school. Sakura hurries to eat her breakfast and get her roller blades on, so she can see Yukito, too. When they reach Yukito, he commends Sakura for being up early.
- 桃矢
( : - 「怪獣
( は五分( で朝飯( 食( えるからな」- “Well, monsters can finish breakfast in five minutes.”
Personal Identity
自分 (Oneself)
自分
It combines 自 (self) with 分 (part) to show one's own part.

Conan’s classmates aren’t fond of their new teacher’s strict attitude. Ms. Kobayashi explains how at her last school, she couldn’t bring herself to be strict, and it allowed her students to get so out of control that students were injured in a fight.
- 小林
( : - 「だから、この学校
( では二度( とあんな事( は繰( り返( すまいと…」- “Therefore, to keep from repeating that kind of situation at this school...”
- 「心
( を鬼( にして自分( にも生徒( にも厳( しくしてきたの…」- “I hardened my heart and became strict, with myself and with my students...”
- “Therefore, to keep from repeating that kind of situation at this school...”