phoneme

剑桥词典

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 /ɪ/ and /æ/. pin和pan的不同在于元音，即音素 /ɪ/ 与 /æ/ 的不同。
比较
grapheme 返回 phoneme