一いち部ぶ分ぶん

い

ち

ぶ

ん

Common wordJLPTN1Freq.FrequencyTop 20,000

Meanings

1

one part; a portion; a section

Refers to a single part, portion, or section of a larger whole. Neutral and widely used for physical parts, abstract components, or segments of text.

彼かれの話はなしは一いち部ぶ分ぶんしか理り解かいできなかった。

I could only understand part of his story.

〈物もの〉の一いち部ぶ分ぶんにすぎないto be nothing more than a part of something
これは全ぜん体たいのほんの一いち部ぶ分ぶんにすぎない。
This is just a small part of the whole.
〈物もの〉の一いち部ぶ分ぶんを占しめるto occupy a part of something
その建たて物ものは敷しき地ちの一いち部ぶ分ぶんを占しめている。
That building occupies a portion of the lot.

部ぶ分ぶんN3
部分 is the general word for 'a part' without specifying singularity, while 一部分 emphasizes 'one single part' of a whole.
一いち部ぶN2
一部 often refers abstractly to 'some part' (e.g. 一部の人は), whereas 一部分 is more concrete and physical, like a piece of an object or text.

全ぜん体たいN3
全体 means 'the whole', directly contrasting with 一部分's meaning of 'just one part'.

大だい部ぶ分ぶんN3
一部分 means just 'a part' of something, while 大部分 means 'most' of it, so the two are easy to mix up despite sharing the kanji 部分.

Compound of 一 (いち, 'one') + 部分 (ぶぶん, 'part, portion'). The reading いちぶぶん is a straightforward combination of the readings of its components.