diacritic

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diacritic

A small mark added to a letter that changes its pronunciation, such as an acute accent (á), a grave accent (à) and a cedilla (ç).
References in periodicals archive ?
The use of macrons and diacritic marks is occasionally marred by confusions.
Therefore diacritic marks are omitted, when the keywords are sought in the student's answer, the difference between characters "i" and "y" is ignored as well.
Finally, early versions of Blackboard do not support use of diacritic marks and non-Roman writing systems except in posted documents--a problem if languages other than English need to be used for Announcements, Discussion Board etc.