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psi

Syllabification: psi
Pronunciation: /(p)sī
 
/

Definition of psi in English:

noun

1The twenty-third letter of the Greek alphabet (Ψ, ψ), transliterated as ‘ps.’.
Example sentences
  • Available in three sizes and able to pump up to a 160 psi max pressure, the pump will be available in September.
  • Variable psi, used within the AHCPR guidelines, can help improve patient comfort.
  • The psi / word association was randomly chosen to be either the first or second of these experiments.
1.1 (Psi) [followed by Latin genitive] Astronomy The twenty-third star in a constellation: Psi Aquarii
More example sentences
  • In 1672, when Mars was in the vicinity of the three Psi stars of Aquarius, the time was ripe for obtaining the first reliable parallax of Mars.
2Supposed parapsychological or psychic faculties or phenomena: he turns to anecdotal evidence to prove that psi exists
More example sentences
  • Is psi only a laboratory curiosity, or is it the universal connecting link among all of us?

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