Over a long vowel it is called a breve, and over a short vowel, I believe it is called a circumflex.
It is called a reflection.
The line above a letter in mathematics means a vector whose mane is the letter. So it is pronounced "vector a"
A location on a line is often called a point, or a place on the line.
a line. arrow on one end is called a ray and no arrows is called a line segment.
To flip a figure over a line is a reflection.
An accent.
The mark over a short vowel is called a breve. It is a diacritical mark used in various languages to indicate a short or light pronunciation of the vowel it is placed over.
The curved line over a short vowel is called a breve. It is used to indicate a short pronunciation of the vowel.
A horizontal line This "horizontal line" that indicates a long vowel is called a Macron. The curved line(the "smile") over a short vowel is a Breve.
a short vowel
long
The long vowel symbol is a bar across the top of the letter, called a macron.The short vowel symbol is a U-shaped curved line called a breve.
Two dots over a vowel is normally called a dieresis. There is a special case of the dieresis in German where the two dots cause the vowel to change (sound and meaning): this special case is called umlaut.
In certain languages, such as Latin and pinyin Mandarin, a macron is placed over the top of a vowel. The most common use for this diacritic is to indicate the long vowel in a word.
A breve (˘) is the symbol used to indicate a short vowel sound in phonetic transcription.
The mark above a short vowel is called a breve. It is used to indicate that the vowel is pronounced as a short sound.
In the concise oxford dictionary it means the vowel has the same sound as the 'a' in mate. But I think the meaning can vary. The word Maori is often written with a line over the 'a' but the vowel sound in Maori is not the same as in mate.