DuckCorp Dico

Found 2 definitions

1.                 From Japanese-English FreeDict Dictionary ver. 0.1:
                   
   
   
                   
                     
    [ichi1]  [news1]  [nf24]  稀 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, 希 /(en)tʃˈaɪniːz(ja)lˈe̞tə/,  [ichi1]  [news1]  [nf24] まれ /mˈäɽe̞/
   (adjectival nouns or quasi-adjectives (keiyodoshi))
            Note: word usually written using kana alonerare, seldom
   
                   
                 

2.                 From Japanese-English FreeDict Dictionary ver. 0.1:
                   
   
   
                   
                     
   希 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, 稀 /(en)tʃˈaɪniːz(ja)lˈe̞tə/, き /kˈi/
   1. (prefix)
   希塩酸dilute
   2. 希書rare