JMdict: 1550160

理論 【りろん】

  1. [n] theory
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Logic, Arrangement, Reason, Justice, Truth ことわり
Argument, Discourse ロン

Words often seen with this one: (experimental feature)

その (22), この (13), 魔法 (12)