Denshi Jisho — Online Japanese dictionary

ほたる firefly (Luciola cruciata); lightning bug; glowworm
Common word, Noun, Usually written using kana alone 
けいか light of a firefly
Noun 
けいこう fluorescence
Noun, No-adjective 
けいせき fluorite; fluorspar
Noun, No-adjective 
けいせつ diligence in studying (e.g. continue to study even in such poor light as offered by a firefly or that reflected by snow)
Noun 
ほたるい Scirpus hotarui (species of bulrush)
Noun, Usually written using kana alone 
ほたるび light of a firefly
Noun 
つちぼたる glowworm
Noun 
ほたるいし fluorite; fluorspar
Noun, No-adjective 
ほたるぐさ dayflower
Noun 
烏賊 ほたるいか firefly squid (Watasenia scintillans); sparkling enope squid
Noun, Usually written using kana alone 
狩り ほたるがり firefly catching
Noun 
ほたるぶくろ bellflower
Noun 
光灯 けいこうとう 1: fluorescent lamp; fluorescent light;
2: person who is slow to react; someone slow on the uptake
Common word, Noun 
光管 けいこうかん fluorescent tube
Noun 
光体 けいこうたい fluorescent substance
Noun 
光燈 けいこうとう 1: fluorescent lamp; fluorescent light;
2: person who is slow to react; someone slow on the uptake
Out-dated kanji, Noun 
光板 けいこうばん fluorescent screen
Noun 
光ペン けいこうペン highlighter; highlighter pen
Noun 
光色 けいこうしょく fluorescent color; fluorescent colour
Noun, No-adjective 
光色素 けいこうしきそ fluorescent dye; fluorescent pigment; fluorochrome
Noun 
雪の功 けいせつのこう the fruit of diligent study
Noun 
光塗料 けいこうとりょう fluorescent paint
Noun 
光物質 けいこうぶっしつ fluorescent substance; phosphor
Noun 
光染料 けいこうせんりょう fluorescent dye
Noun 
光顕微鏡 けいこうけんびきょう fluorescence microscope
Noun 

Found 26 words.

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