Components
5 words matching 'れっか' found
れっか is an exact match with one form of the following word:
劣化
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Reading : れっか   
deterioration; degradation; drop in quality
My mastery:
My current mastery of 劣化:
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Usefulness and usage:
Kanshudo usefulness level: 6 (among the 15,000 most useful words in Japanese)
• Kanshudo usefulness level is based on a usefulness score of 72,855 which gives a rank of 10,958
劣化 is the most useful form. 1 additional form is shown below.
• This form is used about 90% of the time
• Google Japan frequency rank: 14,000 (about 49,800,000 results)
• Wikipedia most common 20000 words rank: 12253
• This form appears in the 24,000 words in the Mainichi Shimbun frequency analysis by Alexandre Girardi
• This form is in band 21 in the EDICT word frequency file (bands go from 1-48, where 1 is most common - each contains about 500 words)
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Example sentences:
ある
ていど
程度
れっか
劣化
やむを
ない
のですできるだけ
ながも
長持
ちさせる
ためコツあります
A certain amount of deterioration is inevitable, but there is a way to make the battery last as long as possible.
でんげん
電源
コード
つな
ぎっぱなし
して
しゅうしん
就寝
する
ひと
おお
おも
います
ひゃく
100
パーセント
%
えている
じょうたい
状態
さらに
じゅうでん
充電
つづ
ける
バッテリー
れっか
劣化
しんこう
進行
させてしまいます

I know that there are many people who leave the cord plugged in and go to sleep, but if you continue to charge the phone when it's over 100%, this will cause steady deterioration of the battery.
リチウムイオン
でんち
電池
しよう
使用
かえ
うちに
れっか
劣化
じゅうでん
充電
できる
ようりょう
容量
っていきます

With repeated use, lithium-ion batteries deteriorate and their capacity to recharge begins to decrease.
れっか
BOOST
My flashcards:
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Usefulness and usage:
• This form is used about 10% of the time
• Google Japan frequency rank: 62,000 (about 6,010,000 results)
• This form appears in the 24,000 words in the Mainichi Shimbun frequency analysis by Alexandre Girardi
• This form is in band 21 in the EDICT word frequency file (bands go from 1-48, where 1 is most common - each contains about 500 words)
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れっか is the reading of the following word:
烈火
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Reading : れっか   
noun
raging fire; conflagration
My mastery:
My current mastery of 烈火:
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Usefulness and usage:
Kanshudo usefulness level: 6 (among the 15,000 most useful words in Japanese)
• Kanshudo usefulness level is based on a usefulness score of 76,962 which gives a rank of 10,690
• Google Japan frequency rank: 30,000 (about 19,600,000 results)
• This form is used as an example of an official Joyo kanji reading
Example sentences:
かれ
れっか
烈火
よう
おこ
った

He was raging mad.
れっか is the reading of the following word:
列火
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Reading : れっか   
noun
kanji "fire" radical at bottom (radical 86)  (灬)
My mastery:
My current mastery of 列火:
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Usefulness and usage:
Kanshudo usefulness level: 10 (among the 100,000 most useful words in Japanese)
• Kanshudo usefulness level is based on a usefulness score of 34,713 which gives a rank of 53,426
• Google Japan frequency rank: 31,000 (about 19,000,000 results)
No examples found for any form of this word.
れっか is the reading of the following word:
裂果
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Reading : れっか   
noun
dehiscent fruit (fruit that opens when ripe, i.e. peas)
My mastery:
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Usefulness and usage:
Kanshudo usefulness level: 11 (among the 150,000 most useful words in Japanese)
• Kanshudo usefulness level is based on a usefulness score of 21,650 which gives a rank of 138,851
• Google Japan frequency rank: 185,000 (about 370,000 results)
No examples found for any form of this word.
れっか is the reading of the following word:
裂罅
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Reading : れっか   
noun
fissure
My mastery:
My current mastery of 裂罅:
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Usefulness and usage:
Kanshudo usefulness level: 12 (among the 180,000 most useful words in Japanese)
• Kanshudo usefulness level is based on a usefulness score of 12,629 which gives a rank of 171,239
• Google Japan frequency rank: 237,000 (about 48,000 results)
No examples found for any form of this word.
レツ   inferior   おと to be inferior to   
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ショウ   すこ a little   すくない few   
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katakana 'no'; whereupon; splitting away from
ショウ   こ-    お-    ちいさい small   
リョク   リキ   ちから effort; power   
カ   ケ   ばける to change   
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ジン   ニン   ひと man   
さじ spoon   
レツ    intense, violent   
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レツ    row   
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トウ   かたな sword   
death
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セキ   ゆう night   
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katakana 'ta'
イチ   イツ   ひと    ひと- one   
fire
カ   fire   ひ    ほ-    
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eight
ジン   ニン   ひと person   
レツ   さ to tear (tr), to split   さける to be torn, to be split, to burst   
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イ   ころも clothes   
カ    result   はたす to carry out   は end, extremity   はてる to come to an end   
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デン   た rice field   
モク   ボク   き    こ- tree   
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ダイ   タイ   おおきい big   おおいに very much   おお-    
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stick   
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