- pressure charging
- pressure clack
- pressure control
- pressure cooker
- pressure curve
- pressure difference
- pressure distillation
- pressure drilling
- pressure drop
- pressure fan
- pressure filter
- pressure forming
- pressure head
- pressure hose
- pressure pump
- pressure recorder
- pressure still
- pressure texture
- pressure treating
- pressure unit
- pressure vessel
- pressure water
- pressure well
- pressure-locked
- pressurestat
- pressurized liquid
- prestrain
- preventive maintenance
- primary acid
- primary cell
- primary colour
- primary commodity
- primary creep
- primary crystallization
- primary fluid
- primary product
- prime ideal
- primuline yellow
- preferred orientation
- preformed soap
- preglacial
- preheater
- prehnitic
- preliminary crusher
- preliminary plan
- preliminary work
- premineral
- premium gasoline
- premium grade
- preparation plan
- preplasticizing
- preservative coating
- preserved latex
- press brake
- press cure
- press filter
- pressed
- pressed charge
- pressed distillate
- pressure drive
- pressure flow
- pressure form
- pressure holder
- pressure maintenance
- pressure switch
- pressure viscosity
- pressure zone
- pretreating
- primary dip
- primary gneiss
- primary porosity
- primary reaction
- primary reduction
- primary water
- prime
- prime factor
- primitive rock
- principal
- prismatic diagram
- prismatic structure
- probable ore
- prevulcanized latex
- prian
- pricing provision
- primary gold
- primary migration
- priming chamber
- prismatic cleavage
- prismatic jointing
- prismatic texture
- private agreement
- process unit
- processing
- processing tax
- prochlorite
- producer gas
- producer shell
- producing formation
- producing zone
- product water