◌̂

Diacritical mark

 * 1)  Falling tone.
 * 2)  Used to indicate a unit vector.
 * 3)  Used to denote an estimator or an estimated value.
 * 4)  Used for an angle.
 * 1)  Used for an angle.

Usage notes
In a number of romanization systems of Japanese, particularly Kunrei-shiki, the circumflex indicates that a vowel is a long vowel.

Other romanization systems, particularly Hepburn, use the macron (an uppermost horizontal line: ¯) for that purpose.

Usage notes

 * In the letter, forms with the stressed sound , as in  and.
 * In the letter, forms with the stressed sound , as in  and.
 * In the letter, forms with the stressed sound , as in  and.

Usage notes
In Vietnamese handwriting and signmaking, this diacritical mark often appears curved, similar to an inverted breve.