| Subject | English | Portuguese |
| el. | line segment | segmento de linha |
| comp., MS, Braz. | line segment | segmento de linha (A portion of a line, defined by its beginning and ending points) |
| math. | straight-line segment | segmento de recta |
| commun., IT | terminating segment of a leased line | segmento terminal de linha alugada |