Meaning of the word sy in English
What does sy mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.
sy
US /saɪ/
UK /saɪ/
Noun
the 23rd letter of the Greek alphabet (Ψ, ψ)
Example:
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The symbol for psychology is the Greek letter psi.
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In physics, psi often represents a wave function.