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Definition of
psi noun
from the Oxford Advanced American Dictionary
psi
noun
noun
NAmE
/
/
saɪ
/
/
,
NAmE
/
/
psaɪ
/
/
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the 23rd letter of the Greek alphabet (Ψ, ψ)
See
psi
in the Oxford Advanced Learner's Dictionary
Check pronunciation:
psi
Other results
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p.s.i.
abbreviation
Nearby words
pseudo-
combining form
pseudonym
noun
psi
noun
p.s.i.
abbreviation
psittacosis
noun