First opened Saturday, February 2, 2013
反応
はんのう
- flat (heiban)
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).
reaction, response
Hannō was coined by Iwakawa Tomotarō in 1884 as a translation of English reaction, and the ō of 応 became nō by renjō.
Taken apart
No breakdown is shown for this word: Wiktionary's text for it doesn't give a split that spells the word and joins to its reading, and any other split would be a guess.
In a sentence
We don't have the data for this section. The pinned Tatoeba export has no sentence with a translation that uses this word and passes our filter.
What Wiktionary says
Quoted line by line from Wiktionary's Etymology section for this reading, taken from one dated dump so it can't change underneath us. Nothing below is paraphrased.
- “Coined by Japanese educator and zoologist Iwakawa Tomotarō in 1884 in his work 生物学語彙 (Seibutsugaku goi, “A biological vocabulary in English, Latin and Japanese”) as a translation of English reaction.”
- “The ō reading for 応 changes to nō as an instance of renjō (連(れん)声(じょう)).”
Source: Wiktionary: 反応 (dump of 2026-09-02), available under CC BY-SA 4.0. Reading, meaning and part of speech from JMdict, and kanji readings from KANJIDIC2 (EDRDG).