Wiktionary

psi

See also: Psi, PSI, psí, and pśi

Translingual

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Etymology

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Abbreviation of English Pashayi.

Symbol

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psi

  1. (international standards) ISO 639-3 language code for Southeast Pashayi.

See also

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English

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Ancient Greek alphabet
←
chi
     →
omega
Ψ ψ
Ancient Greek: ψεῖ
Wikipedia article on psi

Etymology 1

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From Middle English psi, from Latin psī, from Ancient Greek ψεῖ (pseî), the name for the twenty-third letter of the alphabet (Ψ, ψ).[1]

Pronunciation

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Greek letter

  • enPR: psī, sī, IPA(key): /psaɪ/, /saɪ/
  • Audio (US); “psi” (Greek letter):(file)
  • Homophones: xi, sigh, scye, sai, Si (all for the latter pronunciation only)
  • Rhymes: -aɪ

Psychic energy

Noun

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psi (countable and uncountable, plural psis)

  1. (countable) The twenty-third letter of Classical and Modern Greek and the twenty-fifth letter of Old and Ancient Greek.
  2. (uncountable, parapsychology, science fiction) A form of psychic energy.
    • 1993, Will Self, My Idea of Fun:
      ‘Come, lad,’ he said. ‘We will take tea together and speak of the noumenon, the psi and other more heterogenous phenomena.’
    • 1996, Michael F. Stoeber, Hugo Anthony Meynell, Critical Reflections on the Paranormal (page 60)
      When an event is classified as a psi phenomenon, it is claimed that all known channels for the apparent interaction have been eliminated.
    • 2005, Michael Ashley, Transformations: The History of the Science Fiction Magazine 1950 to 1970, Liverpool: Liverpool University Press, page 133:
      It traces the growth of homo gestalt with the uniting of six lovely outcasts of society who have psi powers and come together as a hive mind, thus creating a gestalt super-being.
Derived terms
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Translations
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See also
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Etymology 2

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Initialism of pounds per square inch.

Alternative forms

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Symbol

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psi

English Wikipedia has an article on:
Wikipedia
  1. Pound per square inch (an imperial unit of pressure)
    • 2017 December 12, National Transportation Safety Board, “1.3.5 Electrical Generation and Distribution System”, in Marine Accident Report: Sinking of US Cargo Vessel SS El Faro, Atlantic Ocean, Northeast of Acklins and Crooked Island, Bahamas, October 1, 2015‎[1], archived from the original on 15 May 2022, pages 36–37:
      Each turbogenerator consisted of a steam turbine, powered by 900 psi of superheated steam, that was coupled by a set of reduction gears to a General Electric marine alternating-current generator operating at 1,800 rpm. Each generator had a capacity of 2,000 kilowatts of three-phase power at 450 volts and 60 hertz. The main 450-volt switchboard was energized by the two turbogenerators. The emergency switchboard, in the emergency generator room, was fed from the main switchboard through an electrical tie.
    • 2024 March 23, “Yield Strength of Steel: A Comprehensive Guide”, in Unionfab‎[2], archived from the original on 13 January 2026:
      For M2, this is typically around 3250 MPa (471,000 psi) when tempered at 300°F (149°C).
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References

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  1. ^ “psi, n.”, in OED Online  ⁠, Oxford: Oxford University Press, launched 2000.

Anagrams

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Catalan

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Pronunciation

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Noun

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psi f (plural psis)

  1. Psi; the Greek letter Ψ (lowercase ψ)

Czech

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Pronunciation

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Noun

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psi

  1. nominative/vocative plural of pes

Dutch

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Etymology

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From Ancient Greek ψεῖ (pseî).

Pronunciation

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Noun

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psi m or f (plural psi's, diminutive psi'tje n)

  1. psi (letter of the Greek alphabet)

Further reading

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French

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Pronunciation

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Noun

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psi m (invariable)

  1. psi (Greek letter)

Further reading

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Anagrams

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Italian

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Italian Wikipedia has an article on:
Wikipedia it

Pronunciation

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  • IPA(key): /ˈpsi/*
  • Rhymes: -i
  • Hyphenation: psì

Noun

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psi m or f (invariable)

  1. psi (Greek letter)

Anagrams

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Polish

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Polish Wikipedia has an article on:
Wikipedia pl

Etymology 1

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Etymology tree
Proto-Slavic *pьsьjь
Polish psi

    Inherited from Proto-Slavic *pьsьjь. By surface analysis, pies +‎ -i.

    Pronunciation

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    • Audio:(file)
    • Rhymes: -i
    • Syllabification: psi

    Adjective

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    psi (not comparable, no derived adverb)

    1. (relational) canine, dog
      Synonyms: pieski, (archaic) sobaczy
    Declension
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    Declension of psi (soft)
    singular plural
    masculine animate masculine inanimate feminine neuter virile (= masculine personal) non-virile
    nominative/vocative psi psia psie psi psie
    genitive psiego psiej psiego psich
    dative psiemu psiej psiemu psim
    accusative psiego psi psią psie psich psie
    instrumental psim psią psim psimi
    locative psim psiej psim psich
    Derived terms
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    nouns
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    verb
    nouns

    Etymology 2

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    Etymology tree
    Ancient Greek ψῖ (psî)lbor.
    Polish psi

      Learned borrowing from Ancient Greek ψῖ (psî).

      Pronunciation

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      • IPA(key): /ˈpsi/
      • Rhymes: -i
      • Syllabification: psi

      Noun

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      psi n (indeclinable)

      1. psi (Greek letter Ψ, ψ)

      Etymology 3

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      Onomatopoeic

      Pronunciation

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      Interjection

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      psi

      1. (Near Masovian, often repeated) used to call young dogs
        Coordinate term: a cucu
      Derived terms
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      nouns

      Further reading

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      • “psi”, in Wielki słownik języka polskiego‎[3] (in Polish), Instytut Języka Polskiego PAN
      • “psi”, in Polish dictionaries at PWN‎[4] (in Polish)
      • Władysław Matlakowski (1891), “psi”, in “Zbiór wyrazów ludowych dawnej ziemi czerskiej”, in Sprawozdania Komisyi Językowej Akademii Umiejętności‎[5], volume 4, Krakow: Drukarnia Uniwersytetu Jagiellońskiego, page 372
      • Karol Mátyás (1891), “psi”, in “Słowniczek gwary ludu zamieszkującego wschodnio-południową najbliższą okolicę Nowego Sącza”, in Sprawozdania Komisyi Językowej Akademii Umiejętności (in Polish), volume 4, Kraków: Drukarnia Uniwersytetu Jagiellońskiego, page 328

      Portuguese

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      Pronunciation

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      • Rhymes: -i
      • Hyphenation: psi

      Etymology 1

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      Derived from Ancient Greek ψεῖ (pseî)

      Noun

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      psi m (plural psis)

      1. (countable) psi (name of the Greek letter Ψ)

      Etymology 2

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      Noun

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      psi m or f by sense (plural psis)

      1. (informal) clipping of psicólogo

      References

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      Further reading

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      Romanian

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      Etymology

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      Borrowed from Greek ψι (psi).

      Noun

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      psi m (plural psi)

      1. psi

      Declension

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      singular plural
      indefinite definite indefinite definite
      nominative-accusative psi psiul psi psii
      genitive-dative psi psiului psi psilor
      vocative psiule psilor

      Slovak

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      Pronunciation

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      Noun

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      psi m anim

      1. nominative plural of pes

      Spanish

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      Pronunciation

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      • IPA(key): /ˈsi/ [ˈsi]
      • Rhymes: -i
      • Syllabification: psi

      Noun

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      psi f (plural psíes)

      1. psi; the Greek letter Ψ, ψ

      Further reading

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