psi

From Ancient Greek ψῖ (psî), the name for the twenty-third letter of the alphabet (Ψ, ψ).

Greek letter

• enPR: psī, sī, IPA^(key): /psaɪ/, /saɪ/

• Audio (US) (Greek letter)

  (file)

• Homophones: xi, sigh, scye, sai, Si (all for the latter pronunciation only)
• Rhymes: -aɪ

Psychic energy

• enPR: sī, IPA^(key): /saɪ/

• Audio (US) (psychic energy)

  (file)

• Homophones: xi, sigh, scye, sai, Si
• Rhymes: -aɪ

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) 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.’

• (Greek letter): Previous: chi, Next: omega

Initialism of pounds per square inch.

• P.S.I.
• PSI

psi

1. Pounds per square inch (an imperial unit of pressure)

psia

• IPS, IPs, ISP, Isp, PIs, SIP, SPI, iPS, isp, pis, sip

• (Balearic, Central, Valencian) IPA^(key): /ˈpsi/

psi f (plural psis)

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

• IPA^(key): [ˈpsɪ]

psi

1. nominative/vocative plural of pes

• IPA^(key): /psi/

• Audio

  (file)

• Homophones: psy, psys

psi m (plural psi)

1. psi (Greek letter)

• “psi”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

• pis, spi

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

psi m or f (invariable)

1. psi (Greek letter)

• spi

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

• IPA^(key): /pɕi/

• Audio

  (file)

• Rhymes: -i
• Syllabification: psi

psi (not comparable)

1. (relational) canine, dog

   Synonyms: pieski, (archaic) sobaczy

Borrowed from Ancient Greek ψῖ (psî).

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

psi n (indeclinable)

1. psi (Greek letter Ψ, ψ)

• psi in Wielki słownik języka polskiego, Instytut Języka Polskiego PAN
• psi in Polish dictionaries at PWN

• Rhymes: -i

psi m (plural psis)

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

From Greek ψι (psi).

psi m (plural psi)

1. psi

• IPA^(key): [psi]

psi m anim

1. nominative plural of pes

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

psi f (plural psíes)

1. psi; the Greek letter Ψ, ψ

• “psi”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014