Psi /ˈ(p)saɪ, ˈ(p)siː/ (P)SY, (P)SEE (uppercase Ψ, lowercase ψ or 𝛙; Greek: ψι psi [ˈpsi]) is the twenty-third and penultimate letter of the Greek alphabet...

distinctive Greek letter symbol and KAPPA ALPHA PSI thereby became a Greek letter Fraternity in every sense of the designation." Kappa Alpha Psi has been the...

Look up PSI, Psi, or psi in Wiktionary, the free dictionary. Psi, PSI or Ψ may refer to: Psi (Greek) (Ψ or ψ), the twenty-third letter of the Greek alphabet...

Omega Psi Phi Fraternity, Inc. (ΩΨΦ) is a historically African-American fraternity. The fraternity was founded on November 17, 1911, the first at a historically...

Zeta Psi (ΖΨ) is a collegiate fraternity. It was founded on June 1, 1847, at New York University. The organization now has fifty-three active chapters...

Chi Psi (ΧΨ) is a fraternity consisting of active chapters at 34 American colleges and universities. Chi Psi was founded in 1841 at Union College in Schenectady...

Psi (Ѱ, ѱ; italics: Ѱ ѱ) is a letter in the early Cyrillic alphabet, derived from the Greek letter psi (Ψ, ψ). It represents the sound /ps/, as in English...

The pound per square inch (abbreviation: psi) or, more accurately, pound-force per square inch (symbol: lbf/in2), is a unit of measurement of pressure...

Phi Kappa Psi (ΦΚΨ), commonly known as Phi Psi, is an American collegiate social fraternity that was founded at Jefferson College in Canonsburg, Pennsylvania...

Psi Psi Psi (ΨΨΨ), also known as Tri Psi, is a North American sorority for the mothers of members of the collegiate sorority Delta Delta Delta. Tri Psi...

Schrödinger equation and bra–ket notation: ⟨ ϕ | ψ ⟩ {\displaystyle \langle \phi |\psi \rangle } . The golden ratio 1 + 5 2 ≈ {\displaystyle {\tfrac {1+{\sqrt {5}}}{2}}\approx...

Kappa Kappa Psi National Honorary Band Fraternity (ΚΚΨ, colloquially referred to as KKPsi), is a fraternity for college and university band members in...

Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the twenty-fourth and last letter in the Greek alphabet. In the Greek numeric system/isopsephy (gematria)...

lowercase μ; Ancient Greek μῦ [mŷː], Greek: μι or μυ—both [mi]) is the twelfth letter of the Greek alphabet, representing the voiced bilabial nasal IPA: [m]....

Omega Psi Phi (ΩΨΦ) is an international historically Black fraternity. Founded on November 17, 1911, at Howard University in Washington, D.C., Omega Psi Phi...

The J/ψ (J/psi) meson /ˈdʒeɪ ˈsaɪ ˈmiːzɒn/ is a subatomic particle, a flavor-neutral meson consisting of a charm quark and a charm antiquark. Mesons formed...

Wiesner and psychologist Robert Thouless—had introduced the term "psi" (from ψ psi, 23rd letter of the Greek alphabet) to parapsychology in an article published...

borrowed from their Greek-letter analogues. Letters without Greek equivalents mostly had no numeral values, whereas one letter, koppa, had only a numeric...

the first letter of the Greek alphabet. In the system of Greek numerals, it has a value of one. Alpha is derived from the Phoenician letter aleph , which...

no two-letter chapter name consisting of identical Greek letters would be issued. Thus, the next charter issued after Psi Omega was to Omega Psi. Omega...

is the fourth letter of the Greek alphabet. In the system of Greek numerals it has a value of 4. It was derived from the Phoenician letter dalet 𐤃. Letters...

assimilation of Blacks. Kappa Alpha Psi is the second oldest existing collegiate historically Black Greek letter organization and the first intercollegiate...

Cyrillic, Greek originally had only a single form of each letter; it developed the letter case distinction between uppercase and lowercase in parallel...

Each chapter in Zeta Psi has a unique name composed of one or two Greek letters. A colony petitioning Zeta Psi to become a chapter chooses a name for...

/zaɪ/, US: /ksaɪ/; uppercase Ξ, lowercase ξ; Greek: ξι) is the fourteenth letter of the Greek alphabet, representing the voiceless consonant cluster [ks]...

Psi Upsilon (ΨΥ), commonly known as Psi U, is a North American fraternity, founded at Union College on November 24, 1833. The fraternity reports 50 chapters...

σ, lowercase in word-final position ς; Greek: σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of...

orthography and pronounced [ˈvita]. The letter beta was derived from the Phoenician letter beth . The letter Β had the largest number of highly divergent...

{\displaystyle {\boldsymbol {\tau }}} ; Greek: ταυ [taf]) is the nineteenth letter of the Greek alphabet, representing the voiceless dental or alveolar plosive...

(/ˈkaɪ, ˈxiː/ ; uppercase Χ, lowercase χ; Greek: χῖ) is the twenty-second letter of the Greek alphabet. Its value in Ancient Greek was an aspirated velar...