phoneme

劍橋詞典

one of the smallest units of speech that make one word different from another word
音位，音素
The difference between "pin " and "pan " depends on the vowel , i.e. the different phonemes /?/ and /?/. pin和pan的不同在於元音，即音素 /?/ 與 /?/ 的不同。
比較
grapheme 返回 phoneme