Denshi Jisho — Online Japanese dictionary

にじ rainbow
Common word, Noun 
きりにじ fog bow; fogbow; mistbow; white rainbow
Noun 
こうげい rainbow
Noun, Archaism 
こうさい iris (of the eye)
Noun, No-adjective 
しゅにじ primary rainbow
Noun 
にじいろ rainbow-colored; rainbow-coloured
Noun, No-adjective 
にじます rainbow trout (Oncorhynchus mykiss)
Noun, Usually written using kana alone 
はっこう white rainbow
Noun, Obscure term 
ふくにじ secondary rainbow
Noun 
こうりょう arched beam used in shrine and temple construction
Noun 
彩炎 こうさいえん iritis
Noun 
彩異色症 こうさいいしょくしょう heterochromia iridis; eyes differing in colour (color)
Noun 
彩毛様体炎 こうさいもうようたいえん iridocyclitis
Noun 

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