psi
Portuguese, noun/piˈsi/
psi is spelled P-S-I (3 letters) and appears 1.9 times per million words in written Portuguese, the 23,227th most frequent Portuguese word form (wordfreq, 2021 data). Psi is a Portuguese masculine noun meaning “psi (name of the Greek letter Ψ)” (English Wiktionary, September 2026). The Portuguese Wiktionary (Wikcionário) defines it as “a vigésima terceira letra do alfabeto grego antigo (Ψ, ψ)”.
What does psi mean in English?
noun
- 1
masculinepsi (name of the Greek letter Ψ)
noun
- 1
feminineinformalmasculineclipping of psicólogo
Source: English Wiktionary, Portuguese section, dump of September 2, 2026 (CC BY-SA 4.0).
How Portuguese dictionaries define it
noun: 1. a vigésima terceira letra do alfabeto grego antigo (Ψ, ψ)
The definition in the Portuguese Wiktionary (Wikcionário), in Portuguese.
Source: Portuguese Wiktionary (Wikcionário), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of psi
- psis plural
Source: English Wiktionary and Portuguese Wiktionary (Wikcionário) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce psi?
- Brazil /piˈsi/
- Brazil /ˈpsi/
- Portugal /ˈpsi/
Sources: English Wiktionary, Portuguese Wiktionary (Wikcionário) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
English words that translate to psi
Source: the translation tables of the English Wiktionary, dump of September 2, 2026.
How common is psi in Portuguese?
psi appears 1.9 times per million words in written Portuguese.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).