Look up Χ, χ in Wiktionary, the free dictionary.

For other uses, see Chi.

Chi (uppercase Χ, lowercase χ) is the 22nd letter of the Greek alphabet. Its value in Ancient Greek was an aspirated velar stop /kʰ/ (in the Western Greek alphabet: /ks/). It was introduced as a variant of Phoenician 𐤎. Wikipedia does not have an article with this exact name. ... Wiktionary (from wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ... The Greek alphabet is an alphabet that has been used to write the Greek language since about the 9th century BCE. It was the first alphabet in the narrow sense, that is, a writing system using a separate symbol for each vowel and consonant alike. ... Alpha (uppercase Α, lowercase α) is the first letter of the Greek alphabet. ... For other uses, see Nu. ... Beta (upper case Î’, lower case β) is the second letter of the Greek alphabet. ... Look up Ξ, ξ in Wiktionary, the free dictionary. ... Gamma (uppercase Γ, lowercase γ) is the third letter of the Greek alphabet. ... Omicron (upper case Ο, lower case ο, literally small o) is the 15th letter of the Greek alphabet. ... Look up Δ, δ in Wiktionary, the free dictionary. ... For other uses, see Pi (disambiguation) Pi (upper case Π, lower case Ï€ or Ï–) is the sixteenth letter of the Greek alphabet. ... Look up Ε, ε in Wiktionary, the free dictionary. ... Rho (upper case Ρ, lower case ρ) is the 17th letter of the Greek alphabet. ... Zeta (upper case Ζ, lower case ζ) is the sixth letter of the Greek alphabet. ... Look up Σ, σ, Ï‚ in Wiktionary, the free dictionary. ... Look up Η, η in Wiktionary, the free dictionary. ... Look up Τ, Ï„ in Wiktionary, the free dictionary. ... Look up Θ, θ in Wiktionary, the free dictionary. ... Upsilon (upper case , lower case ) is the 20th letter of the Greek alphabet. ... For programming language, see Iota and Jot. ... Look up Φ, φ in Wiktionary, the free dictionary. ... For other uses, see Kappa (disambiguation). ... Look up Λ, λ in Wiktionary, the free dictionary. ... Look up Ψ, ψ in Wiktionary, the free dictionary. ... Look up Îœ, μ in Wiktionary, the free dictionary. ... Look up Ω, ω in Wiktionary, the free dictionary. ... Digamma (upper case , lower case ) is an archaic letter of the Greek alphabet, used primarily as a Greek numeral. ... San (uppercase , lowercase ) was a letter of the Greek alphabet, appearing between Pi and Qoppa in alphabetical order, corresponding in position although not in name to the Phoenician tsade. ... Qoppa Qoppa is an obsolete letter of the Greek alphabet and has a numeric value of 90. ... Sampi (Upper case Ϡ, lower case ϡ) is an obsolete letter of the Greek alphabet and has a numeric value of 900. ... Stigma is a ligature of the Greek letters sigma and tau, sometimes used nowadays to represent the Greek numeral 6. ... Sho (uppercase , lowercase ) was a letter added to the Greek alphabet in order to write the Bactrian language. ... In the Greek alphabet, vowels can carry diacritics, namely accents and breathings. ... CHI may refer to: CharityHelp International, a non profit organization devoted to utilizing technology for the benefit of small grass roots organizations. ... The Greek alphabet is an alphabet that has been used to write the Greek language since about the 9th century BCE. It was the first alphabet in the narrow sense, that is, a writing system using a separate symbol for each vowel and consonant alike. ... Note: This article contains special characters. ... The voiceless velar plosive is a type of consonantal sound used in many spoken languages. ... It has been suggested that Cumae alphabet be merged into this article or section. ... Samekh is the fifteenth letter of the Phoenician and Hebrew alphabets. ...

In Koine Greek and later dialects it became a fricative along with Θ and Φ. In Modern Greek, is has two distinct pronunciations: In front of high or front vowels (e, i, oi, ai, y) it is pronounced as a voiceless palatal fricative /ç/, as in German ich or like the 'h' in some pronunciations of the English words 'hew' and 'human'. In front of back or low vowels (a, o, ou) and consonants, it is pronounced as a voiceless uvular fricative /χ/, as in German ach or Scottish 'loch'. Koine redirects here. ... Fricatives (or spirants) are consonants produced by forcing air through a narrow channel made by placing two articulators close together. ... Theta (upper case Θ, lower case θ) is the 8th letter of the Greek alphabet. ... Look up Φ, φ in Wiktionary, the free dictionary. ... The voiceless palatal fricative is a type of consonantal sound, used in some spoken languages. ... The English language is a West Germanic language that originates in England. ... The voiceless uvular fricative is a type of consonantal sound, used in some spoken languages. ...

In the system of Greek numerals it has a value of 600. Greek numerals are a system of representing numbers using letters of the Greek alphabet. ...

In ancient times, some dialects of Greek used the chi instead of xi to represent the /ks/ sound. This was borrowed into the early Latin language, which led to the letter X being used for the same sound in Latin, and the modern languages which use the Latin alphabet. Xi (upper case Ξ, lower case ξ) is the 14th letter of the Greek alphabet. ... The Latin alphabet, also called the Roman alphabet, is the most widely used alphabetic writing system in the world today. ...

Chi also was included into Cyrillic alphabet (as letter Х), with the phonetic value /χ/ or /h/. The Cyrillic alphabet (pronounced , also called azbuka, from the old name of the first two letters) is an alphabet used for several East and South Slavic languages—Belarusian, Bosnian, Bulgarian, Macedonian, Russian, Rusyn, Serbian, and Ukrainian—and many other languages of the former Soviet Union, Asia and Eastern Europe. ... Kha, or Ha, (Х, х) is a letter of the Cyrillic alphabet, representing the voiceless velar fricative /x/ (pronounced like the ch in German Bach). It is derived from the greek letter chi. ...

The upper-case letter Χ is used as the symbol for:

• Part of or a substitution for the Labarum monogram.
• The name of Jesus Christ in Christianity, as in X-mas etc.
• The last letter of the name of the TeX typesetting system.

The lower-case letter χ is used as the symbol for: The Labarum An image of the labarum, with the Greek letters Alpha and Omega inscribed. ... This article is about Jesus of Nazareth. ... Christ is the English of the Greek word (Christós), which literally means The Anointed One. ... This 1922 Ladies Home Journal advertisement uses Xmas. Xmas and X-mas are common abbreviations of the word Christmas. They are sometimes pronounced eksmas, but they, and variants such as Xtemass, originated as handwriting abbreviations for the pronunciation Christmas. The -mas part came from the Anglo-Saxon for festival, religious... TeX (IPA: as in Greek, often in English; written with a lowercase e in imitation of the logo) is a typesetting system created by Donald Knuth. ... This article or section is in need of attention from an expert on the subject. ...

• In probability theory, chi distribution a continuous probability distribution.
• In hypothesis testing the chi-square distribution or Chi-square test, a commonly used test statistic.
• The electric susceptibility (sometimes with a subscript e) and magnetic susceptibility in physics.
• The chromatic number and the chromatic index (when shown with a prime mark or a subscript 1) of a graph in graph theory.
• The Euler characteristic in algebraic topology.
• The voiceless uvular fricative (IPA) in phonology.
• An unsigned gathering in formal bibliographic collation.
• The mole fraction of a solution in chemistry.
• The characteristic function of a subset in mathematics
• The characteristic polynomial of a square matrix.

Chi is the basis for the name Chiastic structure and the name of Chiasmus. It has been suggested that this article or section be merged with Probability axioms. ... In probability theory and statistics, the chi distribution is a continuous probability distribution. ... By one convention, a probability distribution is called continuous if its cumulative distribution function is continuous. ... One may be faced with the problem of making a definite decision with respect to an uncertain hypothesis which is known only through its observable consequences. ... In probability theory and statistics, the chi-square distribution (also chi-squared or χ2  distribution) is one of the theoretical probability distributions most widely used in inferential statistics, i. ... A chi-square test is any statistical hypothesis test in which the test statistic has a chi-square distribution when the null hypothesis is true, or any in which the probability distribution of the test statistic (assuming the null hypothesis is true) can be made to approximate a chi-square... The electric susceptibility χe of a dielectric material is a measure of how easily it polarizes in response to an electric field. ... In physics and electrical engineering, the magnetic susceptibility is the degree of magnetization of a material in response to an applied magnetic field. ... Physics (Greek: (phúsis), nature and (phusiké), knowledge of nature) is the branch of science concerned with the fundamental laws of the Universe. ... A 3_coloring suits this graph, but fewer colors would result in adjacent verticies of the same color. ... In graph theory, similar to its vertex counterpart, an edge coloring of a graph, when used without any qualification, is always assumed to be a proper coloring on the edges, meaning no two incident edges are assigned the same color. ... A pictorial representation of a graph In mathematics and computer science, graph theory is the study of graphs, mathematical structures used to model pairwise relations between objects from a certain collection. ... It has been suggested that Vertex/Face/Edge relation in a convex polyhedron be merged into this article or section. ... Algebraic topology is a branch of mathematics in which tools from abstract algebra are used to study topological spaces. ... The voiceless uvular fricative is a type of consonantal sound, used in some spoken languages. ... Articles with similar titles include the NATO phonetic alphabet, which has also informally been called the “International Phonetic Alphabet”. For information on how to read IPA transcriptions of English words, see IPA chart for English. ... Phonology (Greek phonÄ“ = voice/sound and logos = word/speech), is a subfield of linguistics which studies the sound system of a specific language (or languages). ... Bibliographies at the University Library of Graz Bibliography (from Greek: βιβλιογραφία, bibliographia; lit. ... Alphabetical redirects here. ... The mole fraction is one way of expressing the relative concentration of a given species. ... Chemistry - the study of atoms, made of nuclei (conglomeration of center particles) and electrons (outer particles), and the structures they form. ... Some mathematicians use the phrase characteristic function synonymously with indicator function. ... Euclid, Greek mathematician, 3rd century BC, as imagined by by Raphael in this detail from The School of Athens. ... In linear algebra, one associates a polynomial to every square matrix, its characteristic polynomial. ... In mathematics, a matrix (plural matrices) is a rectangular table of numbers or, more generally, a table consisting of abstract quantities that can be added and multiplied. ... Chiastic structure is a literary structure used most notably in the Torah. ... Chiasmus (latinized form of Greek χιασμός, from χίασμα (chiasm), crossing) is a figure of speech based on inverted parallelism. ...

In Plato's Timaeus, it is explained that the two bands which form the soul of the world cross each other like the letter Χ. For other uses, see Plato (disambiguation). ... Timaeus (Honour) (or Timæus) is a name that appears in several ancient (Greek) sources: Timaeus (dialogue), a Socratic dialogue by Plato Timaeus of Locri, the 5th-century Pythagorean philosopher, appearing in Platos s Timaeus. ... In alchemy, the Soul of the World is the theory of the law that governs everything. ...