a mark placed over a vowel to indicate that the vowel is long or placed over a syllable or used alone to indicate a stressed or long syllable in a metrical foot

Pronunciation:
MAY-krahn

In a sentence:
Jason - unprepared and generally unintelligent - became very intimidated and very nervous when he saw the macron over the “a” on his exam paper. He became even more nervous when he saw the “f” with a “-” beside it two weeks later.

In a different sentence:
Dr. Karen’s favorite diacritic was the macron, which she found to be very pleasing to the eye, and very simple. Paradoxically, she absolutely hated the sound of a long vowel, and cringed whenever she heard one spoken aloud.

a mark placed over a vowel to indicate that the vowel is long or placed over a syllable or used alone to indicate a stressed or long syllable in a metrical foot

Pronunciation:
MAY-krahn

In a sentence:
Jason - unprepared and generally unintelligent - became very intimidated and very nervous when he saw the macron over the “a” on his exam paper. He became even more nervous when he saw the “f” with a “-” beside it two weeks later.

In a different sentence:
Dr. Karen’s favorite diacritic was the macron, which she found to be very pleasing to the eye, and very simple. Paradoxically, she absolutely hated the sound of a long vowel, and cringed whenever she heard one spoken aloud.