[釋義]
(名)我國傳統(tǒng)的一種注音方法，用兩個字來注另一個字的音，被切字的聲母跟反切上字相同，被切字的韻母和聲調(diào)跟反切下字相同，如‘麗，郎計切’。由于古今音的變化，用現(xiàn)代的音，有時切不出正確的讀音來。
[構(gòu)成]
偏正式：反〔切

1.{語} a traditional method of indicating the pronunciation of a Chinese character by using two other Chinese characters, the first having the same consonant as the given character and the second having the same vowel (with or without final nasal) and tone (e.g. the pronunciation of 同 tóng is indicated as 徒紅切， meaning a combination of the consonant t from 徒 tú and the vowel plus nasal óng from 紅 hóng)

◎ 反切 fǎnqiè
[a traditional method of indicating the pronunciation of a Chinese character by using two other Chinese characters,the first having the same consonant as the given character and the second having the same vowel (with or without final nasal) and tone] 古漢語注音方法,用兩個字注讀另一個字,例如“塑,桑故切(或桑故反)”。被切字的聲母跟反切上字相同(“塑”字聲母跟“桑”字聲母相同,都是s),被切字的韻母和字調(diào)跟反切下字相同(“塑”字的韻母的字調(diào)跟“故”相同,都是u韻母,都是去聲)
我國給漢字注音的一種傳統(tǒng)方法，亦稱“ 反語 ”、“ 反音 ”。用兩個漢字來注另一個漢字的讀音。兩個字中，前者稱反切上字，后者稱反切下字。被切字的聲母和清濁跟反切上字相同，被切字的韻母和字調(diào)跟反切下字相同。如：東，德紅切。取德的聲母d，紅的韻母ong，便構(gòu)成東音(dōng)。不過古代的四聲是平、上、去、入，與現(xiàn)代漢語的四聲有一些出入，古今聲母也有些變化。 宋 趙彥衛(wèi) 《云麓漫鈔》卷十四：“ 孫炎 始為反切語。”參見“ 反語 ”、“ 反音 ”。