系
けい
kei
JLPT N37 strokesKanjiLevel 91 - JLPT N1
Quick answer
系 is the kanji for "System". The most common reading is けい (kei). Mnemonics and example sentences are listed below.
Meaning
System
Also : Lineage
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Readings
onけい/ kei
kun = Japanese reading · on = Chinese reading
Practice writing
Trace the kanji stroke by stroke with a visual guide.
Stroke Order
7 strokes
Radicals
丿糸
Example Sentences
彼は理系の学部に進学した。
かれはりけいのがくぶにしんがくした。
He pursued a degree in the sciences.
その映画はシリーズ系の作品だ。
そのえいがはしりーずけいのさくひんだ。
That movie is part of a series.
Vocabulary using 系
Grammar to study at this level
- [Verb dictionary/nai form] + ように～ように (you ni) - So that
- [Verb dictionary form] + ことにする～ことにする (koto ni suru) - Decide to
- [Verb dictionary form] + ことになる～ことになる (koto ni naru) - It has been decided that
- [Noun/Verb te-form] + ばかり～ばかり (bakari) - Only / Nothing but
- [Verb/Adjective plain form] + はずだ～はずだ (hazu da) - Should be / It is expected
Last updated Jun 11, 2026
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