Psi is the twenty third letter of the Greek alphabet.
(noun)An example of psi is Ψ.
Psi is the twenty third letter of the Greek alphabet.
(noun)An example of psi is the average human blood pressure of 2.32 psi/1.55 psi which equates to 120/80.
See psi in Webster's New World College Dictionary
noun
Origin: LGr < Gr psei
adjective
noun
See psi in American Heritage Dictionary 4
noun
Origin:
Origin: Middle English
Origin: , from Late Greek
Origin: , from Greek psei
.noun
Origin:
Origin: Shortening and alteration of parapsychological
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