See also: 隔音符號

Chinese

edit
For pronunciation and definitions of – see 隔音符號 (“apostrophe used to divide syllables within a word to avoid ambiguity in various alphabetic systems used in China; in pinyin, to be used between two syllables whenever the second syllable begins with an a, o or e and not in any other circumstance”).
(This term is the simplified form of 隔音符號).
Notes: