儿化音

兒化音
érhuàyīn
(Chinese phonetics) erhua (the sound of the r-coloring of a syllable final)

CEDICT

  1. (Chinese phonetics) erhua; erization (the r-coloring or addition of the 兒 sound (/ɻ/, /n/, /ŋ/) to syllables to form diminutives)
  2. erhua; erization (the r-coloring or addition of the 兒 sound (/ɻ/, /n/, /ŋ/) to syllables to form diminutives)

Wiktionary

汉语北京音系和某些方言中的语音现象。即某些词后所缀的「儿」字不自成一音节，而和前一字的音节合在一起，使前一音节的韵母成捲舌韵母。

重編國語辭典

Entry Composition

1 儿化 érhuà (Chinese phonetics) to rhotacize a syllable final; to apply r-coloring to the final of a syllable
2 音 yīn
  1. sound
  2. noise
  3. note (of musical scale)
  4. tone
  5. news
  6. syllable
  7. reading (phonetic value of a character)