- portable hydrological logging meter
- portable in situ fluorescence fast detector of water algae
- portable life support system
- portable media player
- portable meridian circle
- portable operating system
- portable penetrant test device
- portable roadway equipment
- portable sprinkler system
- portable steel bridge
- portable steel bridge pier
- portable surface contamination monitor
- portable transit instrument
- portable visibility lidar
- portable X-ray fluorimeter
- portable X/γ radiation monitoring meter
- portable γ-ray multi-channel spectrometer
- port-admittance matrix
- Portage Project
- porta hepatis
- port air pollution prevention and control
- portal
- portal area
- portal canal
- portal crane