stress mark

US /ˈstres mɑːrk/
UK /ˈstres mɑːrk/
"stress mark" picture
1.

marca de estresse, sinal de acento

a mark (such as an accent) used in phonetics to indicate the place of the stress in a word

:
The dictionary uses a stress mark to show where the emphasis falls.
O dicionário usa uma marca de estresse para mostrar onde a ênfase recai.
Learning to recognize the stress marks helps with pronunciation.
Aprender a reconhecer as marcas de estresse ajuda na pronúncia.