O OneWordDaily
AI-generated image
Word of the Day Wednesday, June 10, 2026

psi

/psaɪ/ noun · British & US
Valid in UKValid in US
Share WhatsApp

What does psi mean?

noun

The 23rd letter of the Greek alphabet. In physics, a unit of measurement for pressure.

Example

"The physicist used the psi unit to measure the pressure of the gas in the container."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for psi

Rhymes with psi

Etymologically related