First opened Sunday, April 16, 2006
蛍光灯
けいこうとう
Pitch accent: We don't have the data for this section. No accent list gives this spelling and reading, or the two we check against disagree.
fluorescent lamp
Keikōtō is 蛍光 (keikō, “fluorescent”) plus 灯 (tō, “light”).
Taken apart
Select a part to see every word so far that is taken apart with it.
In a sentence
ハリーは本当に蛍光灯だね。
Harry's really slow to catch on.
そこの蛍光灯を交換しないといけない。
I must replace that fluorescent lamp.
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
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.
- “Compound of 蛍(けい)光(こう) (keikō, “fluorescent”) + 灯(とう) (tō, “light”).”
Source: Wiktionary: 蛍光灯 (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).
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.
- Compound
- Two or more words or stems joined into one.