Definition of psi Psi
/sajˈ/ - [say] - psi
We found 6 definitions of psi from 4 different sources.
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What does psi mean?
WordNet
NounPlural: psis |
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| psi - the 23rd letter of the Greek alphabet | ||
| alphabetic character, letter of the alphabet, letter a written message addressed to a person or organization; "mailed an indignant letter to the editor" | ||
| psi - a unit of pressure | ||
| pounds per square inch | ||
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Wiktionary 
- psi (Noun)
The twenty-third letter of Classical Classical and Modern Greek and the twenty-fourth letter of Old Old and Ancient Greek . - psi (Noun)
A form of psychic energy.
Wikipedia 
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letter
Psi (uppercase/lowercase Ψ ψ), is the letter of the Greek alphabet, used to represent the "ps" sound in Ancient and Modern Greek. In the system of Greek numerals, it has a value of 700. Letters that came from it include the Roman P and Cyrillic Ѱ.
Part of speech
🔤- psi, noun, singular of psis.
