from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A symbol in writing used with a letter to indicate a different pronunciation, stress, tone, or meaning, also called "tone marks" when used to indicate tones, e.g. in Vietnamese or pinyin (romanised Mandarin Chinese).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a mark added to a letter to indicate a special pronunciation
diacritical + mark (Wiktionary)