Jisho.org: Japanese Dictionary

かくぶんれつはんのう核分裂反応

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Noun

1. nuclear fission; fission reaction

Wikipedia definition

2. Nuclear fissionIn nuclear physics and nuclear chemistry, nuclear fission refers to either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts, often producing free neutrons and photons (in the form of gamma rays), and releasing a very large amount of energy, even by the energetic standards of radioactive decay.
Read “Nuclear fission” on English Wikipedia
Read “核分裂反応” on Japanese Wikipedia
Read “Nuclear fission” on DBpedia

2.7625313510959253

10 strokes. JLPT N1. Jōyō kanji, taught in junior high.

核

nucleus, core, kernel

On: カク

0.13958053142379412

4 strokes. Jōyō kanji, taught in grade 2.

分

part, minute of time, segment, share, degree, one's lot, duty, understand, know, rate, 1%, chances, shaku/100

Kun: わ.ける、わ.け、わ.かれる、わ.かる、わ.かつ

On: ブン、フン、ブ

6.054305550507071

12 strokes. JLPT N1. Jōyō kanji, taught in junior high.

裂

split, rend, tear

Kun: さ.く、さ.ける、 -ぎ.れ

On: レツ

0.8331212969357712

4 strokes. JLPT N3. Jōyō kanji, taught in grade 3.

反

anti-

Kun: そ.る、そ.らす、かえ.す、かえ.る、 -かえ.る

On: ハン、ホン、タン、ホ

1.933771945767148

7 strokes. JLPT N1. Jōyō kanji, taught in grade 5.

応

apply, answer, yes, OK, reply, accept

Kun: あた.る、まさに、こた.える

On: オウ、ヨウ、 -ノウ

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