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Vocabulary Entry
psi
|noun • noun • verb
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N
noun
The 23rd letter of the Greek alphabet (Ψ, ψ), often used in scientific and mathematical contexts.
Example Sentences
"In physics, psi is often used to denote wave function."
"The symbol psi represents the quantum state of a particle."
"In Greek, the letter that follows phi is psi."
N
noun
A unit of pressure equal to one pound per square inch.
Example Sentences
"The tire pressure should be maintained at 30 psi for optimal performance."
"High pressure systems are measured in psi."
"He checked the psi level of the water pump."
V
verb
To psych out or psychologically intimidate someone.
Example Sentences
"He tried to psi his opponents before the big match."
"Coaches often psi their players to boost their confidence."
"She was able to psi him with just a glance."