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Jyutping jam1 duk6
Pinyin yīn dú

Definitions (CC-CEDICT)
  1. reading or phonetic value of a character
  2. (Japanese linguistics) on-reading, a pronunciation of a kanji derived from its pronunciation in a Sinitic language at the time it was imported from China (Note: An on-reading of a character is distinguished from its kun-reading(s) 訓讀|训读[xun4 du2]. For example, 山 has an on-reading "san" and a kun-reading "yama".)
Definitions (粵典–words.hk)
  1. 名詞、日本、術語
    日文​漢字發​音​嘅​一​種​,​保留​漢​字​嘅​漢​語​發​音
    on'yomi
    音読み
  2. 反義詞
    訓讀
Definitions (Wiktionary)
  1. noun
    reading of a Chinese character in non-Chinese languages based on the original Chinese pronunciation; on'yomi or ondoku in Japanese, eumdok in Korean
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)