1. In a pneumatic manner
   "at the present time the transmission is very often done hydraulically or pneumatically"

See also: pneumatic

• petrissage
• petrochemical
• petrochemistry
• Petrocoptis
• petrodollar
• Petrogale
• petroglyph
• Petrograd
• petrography
• petrol
• petrol bomb
• petrol engine
• petrol gage
• petrol gauge
• petrol line
• petrol pump
• petrol station
• petrol tank
• petrolatum
• petrolatum gauze
• petroleum
• petroleum future
• petroleum geologist
• petroleum geology
• petroleum jelly