| Subject | English | Portuguese |
| earth.sc. | full width at half maximum | largura a meia altura |
| nat.sc. | full width half intensity | largura total a meia intensidade |
| scient. | full width half maximum | largura total a meia altura |
| antenn., opt. | full width half maximum | largura a meia altura de uma característica |
| stat., scient. | half-width | semiamplitude |
| math. | half-width | semi-amplitude |
| comp., MS, Braz. | half-width character | caractere de meia largura (In a double-byte character set, a character that is represented by one byte and typically has a full-width variant) |