| Subject | English | French |
| commun., comp. | physical layer | couche 1 |
| commun., comp. | physical layer | couche physique |
| comp., MS | physical layer | couche physique (Layer one of the OSI model. A software layer that transmits bits from one computer to another and regulates the transmission of a stream of bits over a physical medium. This layer defines how the cable is attached to the network and which transmission technique is used to send data over the cable) |
| gen. | physical layer | couche PHY |
| commun. | physical layer convergence protocol | protocole PLCP |
| el. | physical thickness of scattering layer | épaisseur spatiale d'une couche diffusante |
| IT | set of data link and physical layers | ensemble couche liaison-couche physique |