umlaut

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a diacritical mark (two dots) placed over a vowel in German to indicate a change in sound
• Syn:
dieresis, diaeresis
• Hypernyms:
diacritical mark, diacritic

• Từ đồng nghĩa / Synonyms:
  dieresis, diaeresis