| Subject | English | Portuguese |
| health. | a device for determining the relationship of different brightnesses by the method of equal sensation intervals | disco de Delboeuf |
| comp., MS, Braz. | adaptive brightness | brilho adaptável (Automatic display adjustment that changes the brightness of your PC screen (laptop and desktop) using light environment information provided by the ambient light sensor) |
| comp., MS | adaptive brightness | luminosidade adaptável (Automatic display adjustment that changes the brightness of your PC screen (laptop and desktop) using light environment information provided by the ambient light sensor) |
| commun., el. | automatic brightness control | controlo automático de brilho |
| commun., el. | automatic brightness control | controlo automático de luminosidade |
| IT, nat.sc. | automatic brightness control | controlo automático do brilho |
| health. | brightness contrast | contraste de luminosidade |
| commun., el. | brightness control | controlo de luminosidade |
| comp., MS, Braz. | Brightness, Decrease | Brilho, Diminuir (A filter effect in Windows Movie Maker) |
| comp., MS | Brightness, Decrease | Luminosidade, Diminuir (A filter effect in Windows Movie Maker) |
| comp., MS, Braz. | Brightness, Increase | Brilho, Aumentar (A filter effect in Windows Movie Maker) |
| comp., MS | Brightness, Increase | Luminosidade, Aumentar (A filter effect in Windows Movie Maker) |
| el. | brightness meter | medidor de luminância |
| commun. | brightness ratio | contraste |
| tech., industr., construct. | brightness reversion | amarelecimento |
| commun. | brightness temperature | temperatura de brilho |
| antenn., opt. | brightness theorem | conservação da luminância |
| el. | brightness voltage hysteresis | histerese de tensão da intensidade de brilho |
| antenn., opt. | conservation of brightness | conservação da luminância |
| light. | equality of brightness photometer | fotómetro de igualização de brilho |
| transp., avia. | highlight brightness | máxima luminosidade |
| cultur. | image brightness | claridade da imagem |
| tech., industr., construct. | ISO-brightness | índice de brancura ISO |
| tech., industr., construct. | ISO-brightness | fator de reflexão difusa no azul |
| tech., industr., construct. | ISO-brightness | fator de refletância difusa no azul |
| tech., industr., construct. | ISO-brightness | brancura ISO |
| earth.sc., el. | voltage-variable-brightness diode | díodo de brilho variável com a tensão |