air pressure

[ air presh-er ]

noun

1. the force exerted by air, whether compressed or unconfined, on any surface in contact with it.

Word History and Origins

Origin of air pressure¹

First recorded in 1870–75

Example Sentences

Still others, especially the percussion instruments, are struck by hammers that move when the air pressure changes.

From The Daily Beast

The force of the wind was dropping rapidly; so was the air pressure.

From Project Gutenberg

We are now getting the air-pressure through the pipe in both ends of the tube alike, and do not move the pellet either way.

From Project Gutenberg

A final shaping of the bend may be made by heating in a large blowpipe flame and expanding slightly by air pressure.

From Project Gutenberg

After a while, the student will find that he can maintain a steady air pressure and yet breathe with complete comfort.

From Project Gutenberg

The use of such a blowing-tube avoids the inconvenience of raising the work to the mouth when internal air-pressure is required.

From Project Gutenberg