accent mark

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun linguistics A mark or character used in writing, in order to indicate the place of the spoken accent, or to indicate the nature or quality of the vowel marked.
• noun music A mark used to represent specific stress on a note.
• noun music A mark placed after a letter designating a note of music to indicate the octave in which it occurs.
• noun mathematics A mark placed at the right hand of a letter, and a little above it, to distinguish magnitudes of a similar kind expressed by the same letter, but differing in value, as y', y''.
• noun geometry A mark at the right hand of a number, indicating minutes of a degree, seconds, etc., as in 12' 27'', meaning twelve minutes and twenty-seven seconds.
• noun engineering A mark used to denote feet and inches, as in 6' 10'', meaning six feet ten inches.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a diacritical mark used to indicate stress or placed above a vowel to indicate a special pronunciation