| 啶 | [ dìng ] idine (chemistry) |
| ⇒ 吖丁啶 | [ ā dīng dìng ] azetidine (chemistry) (loanword) |
| ⇒ 吖啶 | [ ā dìng ] acridine (antiseptic and disinfectant) |
| ⇒ 吡啶 | [ bǐ dìng ] pyridine C5H5N (loanword) |
| ⇒ 哌啶 | [ paì dìng ] piperidine (chemistry) (loanword) |
| ⇒ 哌替啶 | [ paì tì dìng ] pethidine (aka meperidine or Demerol) (loanword) |
| ⇒ 嘧啶 | [ mì dìng ] pyrimidine C4H4N2 |
| ⇒ 尿嘧啶 | [ mì dìng ] uracil nucleotide (U, pairs with adenine A 腺嘌呤 in RNA) |
| ⇒ 氨吖啶 | [ ān ā dìng ] aminoacridine or aminacrine (antiseptic and disinfectant) |
| ⇒ 胞嘧啶 | [ baō mì dìng ] cytosine nucleotide (C, pairs with guanine G 鳥嘌呤|鸟嘌呤 in DNA and RNA) |
| ⇒ 胸腺嘧啶 | [ xiōng xiàn mì dìng ] thymine nucleotide (T, pairs with adenine A 腺嘌呤 in DNA) |