This site will be taken down March 31st, 2026.

This was not an easy decision to make. For the last couple years, I have been struggling to find motivation for this site and to keep up with basic maintenance and security updates. With the rise of AI and more sophisticated tools, the usefulness of sites like this is questionable and traffic has nose-dived. I just don't have it in me to keep doing this. Thank you all for 10 years of support!

Zach

理論

Reading

Kana: りろん
Romaji: riron
Kana
Romaji

Definition

1

theory

Kanji

Readings: リ、 ことわり
Meanings: logic, arrangement, reason, justice, truth
Reading: ロン
Meanings: argument, discourse

Example Sentences

これは大切(たいせつ)理論(りろん)だ。
➥This is an important theory.
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(かれ)理論(りろん)一考(いっこう)(あたい)する。
➥His theory deserves consideration.
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(かれ)論理(ろんり)にはついていけない。
➥I cannot follow his logic.
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(かれ)理論(りろん)事実(じじつ)(もと)づく。
➥His theory is based on fact.
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(かれ)理論(りろん)実行(じっこう)(うつ)された。
➥His theories were put into effect.
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この理論(りろん)日本(にっぽん)にあてはまる。
➥This theory is true of Japan.
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