First opened Saturday, July 25, 2026
理論
りろん
- head-high (atamadaka): falls after mora 1
How to read it: a line over a kana means the voice is high there, and ↓ marks where it drops. A kana with no line is low. With no ↓ the pitch stays high to the end and does not drop even on a following particle (が, は).
theory
Taken apart
We don't have the data for this section. Wiktionary has no Etymology section for this reading, and a split made without one would be a guess.
In a sentence
これは大切な理論だ。
This is an important theory.
彼の理論は事実に基づく。
His theory is based on fact.
Sentences are from Tatoeba (CC BY 2.0 FR), picked by fixed rules from a dated export and shown unchanged. Nobody has reviewed them one by one.
What Wiktionary says
We don't have the data for this section. The pinned Wiktionary dump has no Etymology section for this reading, so nothing is said about where the word comes from.
What the labels mean
- 漢語 Sino-Japanese
- Words built from Chinese-derived morphemes — borrowed from Chinese or coined in Japan out of Chinese parts — read with on'yomi.