Skip to main content
Glite Dictionary
💨 A pressure unit 🔤 A Greek letter
psi

psi

25 6.1
A unit for measuring pressure showing how many pounds of force press on one square inch
  • noun
  • /ˈsaɪ/
  • Specialized
translation icon : psi
  • The tire pressure should be set to 32 psi for optimal performance.

What's the bite PSI of a gorilla?

Examples

  • Continuous operating pressure is up to 3,500 psi with intermittent pressure to 4,000 psi.

    Academic text (1994)

  • Devices are available in absolute and gauge configurations from 1 psi full scale to 100 psi.

    Academic text (1994)

  • I need to know how PSI changes with X.

  • It's going to get up to about 300 psi before this thing finally cannot take it.

    Drain the Bermuda Triangle (2014)

  • We're losing cabin pressure and we're at 17 psi.

    97 Minutes (2023)

  • Seems to be settling in at 18 psi.

    Sexual Predator (2001)

  • Between 80 and 100 psi!

    Men in Black 3 (2012)

  • It'll have the Max PSI and maybe even the minimum PSI.

  • Tank one is at 725 psi and falling.

    Apollo 13 (1995)

  • The water pressure at that depth is 10,000 psi.

    Monster Trucks (2016)

Synonyms

pounds per square inch
vspsi
  • Specialized
7 3.4

A unit that measures pressure equal to one pound of force on one square inch

is the same unit written as a short abbreviation

Compounds

psi particle
  • Specialized
9.9

A heavy neutral meson made of a quark and an antiquark seen in physics experiments

Surface Forms

psi singular
psis plural

Morphology

psi = p + s + i

This is an initialism (letters from 'pounds per square inch'); the component letters are not productive English morphemes, so the meaning is not derivable by a typical learner from the parts.

Etymology

Psi is short for pounds per square inch, literally a 'pound' of force on each 'square inch' of area, so it is a simple measure of how strong a pressure is.