{ "id": "epa95tvs4e", "slug": "gamma", "title": "Gamma (γάμμα)", "updated": "2026-10-25", "topic_path": [ { "id": "society", "label": "Society and history", "api_url": "https://www.edgepedia.org/api/v1/topics/society" }, { "id": "society.language", "label": "Languages and linguistics", "api_url": "https://www.edgepedia.org/api/v1/topics/society.language" }, { "id": "society.language.writing", "label": "Writing and notation systems", "api_url": "https://www.edgepedia.org/api/v1/topics/society.language.writing" }, { "id": "society.language.writing.writing.ancient_aegean", "label": "Mediterranean, Italic, and undeciphered ancient scripts", "api_url": "https://www.edgepedia.org/api/v1/topics/society.language.writing.writing.ancient_aegean" } ], "geo": [ { "id": "geo.weu.tbc.society.language", "label": "Western Europe · Before 500 BC: Languages and linguistics", "api_url": "https://www.edgepedia.org/api/v1/geo/geo.weu.tbc.society.language", "path": [ { "id": "geo.weu", "label": "Western Europe", "api_url": "https://www.edgepedia.org/api/v1/geo/geo.weu" }, { "id": "geo.weu.tbc", "label": "Western Europe · Before 500 BC", "api_url": "https://www.edgepedia.org/api/v1/geo/geo.weu.tbc" }, { "id": "geo.weu.tbc.society", "label": "Society and history", "api_url": "https://www.edgepedia.org/api/v1/geo/geo.weu.tbc.society" }, { "id": "geo.weu.tbc.society.language", "label": "Languages and linguistics", "api_url": "https://www.edgepedia.org/api/v1/geo/geo.weu.tbc.society.language" } ] } ], "excerpt": "Gamma (γάμμα, Γ γ) is the third letter of the Greek alphabet, from Phoenician gimel (\"camel\"), numeral value 3, [g] in Ancient Greek, ancestor of Latin C and G, and a common scientific symbol.", "snippet": "Gamma (γάμμα, Γ γ) is the third letter of the Greek alphabet, from Phoenician gimel (\"camel\"), numeral value 3, [g] in Ancient Greek, ancestor of Latin C and G, and a common scientific symbol.", "node": "society.language.writing.writing.ancient_aegean", "markdown": "# Gamma (γάμμα)\n\n**Gamma** (γάμμα) is the third letter of the [Greek alphabet](https://www.edgepedia.org/greek-alphabet), written uppercase Γ and lowercase γ, derived from the third letter of the [Phoenician alphabet](https://www.edgepedia.org/phoenician-alphabet), gimel.[1](https://www.etymonline.com/word/gamma) In the Greek Milesian numeral system it carries the value 3, following alpha (1) and beta (2).[2](https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-22/) In mathematics and science the letter is heavily reused as a symbol, so Unicode encodes separate mathematical forms such as the italic capital gamma identified with the gamma function and the double-struck ℾ and ℽ.[3](https://www.unicode.org/Public/UCD/latest/charts/nameslist/0370/)\n\n| Key fact | Detail |\n|---|---|\n| Position and value | Third letter of the Greek alphabet; numeral value 3 in the Milesian system[1](https://www.etymonline.com/word/gamma) • [2](https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-22/) |\n| Forms | Uppercase Γ (U+0393, UTF-8 CE93), lowercase γ (U+03B3, UTF-8 CEB3)[4](https://op.europa.eu/el/web/eu-vocabularies/formex/physical-specifications/character-encoding/greek-letters) |\n| Origin | Phoenician gimel, said to mean literally \"camel\"[1](https://www.etymonline.com/word/gamma) |\n| Sound, ancient Greek | The voiced velar stop [g][5](https://www.greek-language.gr/digitalResources/ancient_greek/history/ag_history/browse.html?start=61) |\n| Sound, Modern Greek | Generally represents a voiced velar fricative [ɣ] or, before front vowels, a voiced palatal fricative [ʝ], not the Ancient Greek voiced velar stop [g][6](https://en.alegsaonline.com/art/37427) • [15](https://pmc.ncbi.nlm.nih.gov/articles/PMC5693874/) |\n| Mathematical forms | Double-struck ℾ (U+213E) and ℽ (U+213D), plus bold and italic gammas in the Mathematical Alphanumeric Symbols block[3](https://www.unicode.org/Public/UCD/latest/charts/nameslist/0370/) • [7](https://www.unicode.org/charts/PDF/U1D400.pdf) |\n| Derived letters | Roman C and G descend from gamma via the Etruscan alphabet[1](https://www.etymonline.com/word/gamma) |\n\n## Origin and name\n\nThe Greek alphabet was adapted from the Phoenician alphabet, and gamma's history follows the acrophonic pattern of that adaptation. The third Phoenician consonant was named gaml, believed to be a pictograph of a camel, emphasizing its hump; through the acrophonic principle the sign came to denote the sound [g]. The Greeks used the letter for their own consonant [g] and named it γάμα, adapting the Phoenician word.[5](https://www.greek-language.gr/digitalResources/ancient_greek/history/ag_history/browse.html?start=61) English etymological sources record the same chain: gamma comes from Phoenician gimel, said to mean literally \"camel\" and to be so called for a fancied resemblance of its shape to some part of the animal.[1](https://www.etymonline.com/word/gamma) [Herodotus](https://www.edgepedia.org/herodotus) stated plainly that the Greeks learned writing from the Phoenicians, first using the same letters and then changing their sounds and shapes over time.[5](https://www.greek-language.gr/digitalResources/ancient_greek/history/ag_history/browse.html?start=61)\n\n## Pronunciation history\n\nIn [Ancient Greek](https://www.edgepedia.org/ancient-greek) gamma represented a voiced velar stop [g], as attested in the Center for the Greek Language's history of the language.[5](https://www.greek-language.gr/digitalResources/ancient_greek/history/ag_history/browse.html?start=61) A peculiarity of later usage is documented in a 2021 [Mnemosyne](https://www.edgepedia.org/mnemosyne) study: a change in the pronunciation of gamma in Post-Classical Greek led scribes to use the letter systematically for the sound once written with digamma, a letter that had been lost from most dialects' alphabets.[8](https://eurekamag.com/research/088/945/088945045.php)\n\nIn [Modern Greek](https://www.edgepedia.org/modern-greek) the letter generally represents [ɣ], or [ʝ] before front vowels, rather than the ancient voiced velar stop [g].[6](https://en.alegsaonline.com/art/37427) • [15](https://pmc.ncbi.nlm.nih.gov/articles/PMC5693874/)\n\n## Ancient letter forms\n\n[Archaic Greece](https://www.edgepedia.org/archaic-greece) used regional epichoric alphabets, and gamma's shape varied accordingly. It could be written Γ, Λ-shaped, or C-shaped; the C-shaped gamma of some regions is the form the Etruscans and Romans took over as their letter C.[9](https://grammar.katabiblon.com/?page=ar) The straight |Γ| form is the one that prevailed in the later standardized alphabet, attested at Samos, the southern Cyclades, Argos, Boeotia, and the Euboean colony of [Methone](https://www.edgepedia.org/methone-pieria); distinguishing gamma from lambda plainly was a design concern, since both are angle shapes that could occur in various positions.[10](https://books.casematepublishing.com/Early_Greek_Alphabetic_Writing.pdf) An Athenian boundary stone in the [Open University](https://www.edgepedia.org/open-university)'s ancient Greek course shows gamma drawn in a shape resembling capital lambda, which was less confusing than it sounds because the Athenian lambda looked more like the Latin letter L.[11](https://www.open.edu/openlearn/mod/oucontent/view.php?id=114239§ion=7)\n\n## Use as a numeral\n\nIn the Milesian alphabetic numeral system the letters serve as digits, with alpha = 1, beta = 2, and gamma = 3.[2](https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-22/) The lower numeral sign ͵ (U+0375, the aristeri keraia) placed on the left side of a letter indicates a value in the thousands in this system.[2](https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-22/)\n\n## In science and mathematics\n\nThe use of Greek letters for mathematical variables and operators is well established, and Unicode preserves font-style distinctions because the same letter shape can carry unrelated meanings in one document.[12](https://unicode.org/versions/Unicode16.0.0/core-spec/chapter-22/) For gamma specifically the standard encodes a bold capital gamma, an italic capital gamma identified with the gamma function, and double-struck forms ℾ and ℽ.[3](https://www.unicode.org/Public/UCD/latest/charts/nameslist/0370/) • [7](https://www.unicode.org/charts/PDF/U1D400.pdf) The NIST Guide to the SI lists Γ and γ among the Greek letters, in both roman and italic type, as standard symbols for quantities, units, and descriptive terms in technical documents.[13](https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-10-more-printing-and-using-symbols-and-numbers)\n\nThe letter also names a physical phenomenon: gamma rays, named in 1903, were originally thought to be a third type of radiation but were later found to be very short X-rays.[1](https://www.etymonline.com/word/gamma)\n\n## Descendants in other alphabets\n\nGamma's shape traveled through the Etruscan alphabet into Latin. Early Romans made little use of Greek kappa and used gamma for both the \"g\" and \"k\" sounds, so the k value came to be seen as the letter's proper one; the letter G was invented as a modified gamma around 250 BC to restore a dedicated sign for /g/.[1](https://www.etymonline.com/word/gamma) Etruscan inscriptions of the Orientalizing period even show a distinctive \"hooked gamma\" form studied in its own right by epigraphers.[14](https://air.unimi.it/handle/2434/950651)\n\n## References\n\n1. [Gamma – Etymology, Origin & Meaning, Etymonline](https://www.etymonline.com/word/gamma)\n2. [The Unicode Standard, Version 17.0.0, Chapter 22](https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-22/)\n3. [Greek and Coptic – Unicode 18.0.0 NamesList](https://www.unicode.org/Public/UCD/latest/charts/nameslist/0370/)\n4. [Greek letters – EU Vocabularies, Publications Office of the EU](https://op.europa.eu/el/web/eu-vocabularies/formex/physical-specifications/character-encoding/greek-letters)\n5. [Ιστορία της αρχαίας ελληνικής γλώσσας (Α.-Φ. Χριστίδης), Κέντρο Ελληνικής Γλώσσας](https://www.greek-language.gr/digitalResources/ancient_greek/history/ag_history/browse.html?start=61)\n6. [Gamma (Greek letter Γ, γ): history, notation, and common uses, AlegsaOnline](https://en.alegsaonline.com/art/37427)\n7. [The Unicode Standard, Version 17.0, Mathematical Alphanumeric Symbols chart (U1D400)](https://www.unicode.org/charts/PDF/U1D400.pdf)\n8. [The Use of Gamma in Place of Digamma in Ancient Greek (Mnemosyne 74, 2021), via EurekaMag](https://eurekamag.com/research/088/945/088945045.php)\n9. [Kata Biblon: Archaic Letters and epichoric Greek alphabets](https://grammar.katabiblon.com/?page=ar)\n10. [Early Greek Alphabetic Writing, Casemate Publishing](https://books.casematepublishing.com/Early_Greek_Alphabetic_Writing.pdf)\n11. [Getting started on ancient Greek, Session 7, The Open University](https://www.open.edu/openlearn/mod/oucontent/view.php?id=114239§ion=7)\n12. [The Unicode Standard, Version 16.0.0, Chapter 22](https://unicode.org/versions/Unicode16.0.0/core-spec/chapter-22/)\n13. [NIST Guide to the SI, Chapter 10: More on Printing and Using Symbols and Numbers](https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-10-more-printing-and-using-symbols-and-numbers)\n14. [Il gamma a uncino e il san nelle iscrizioni etrusche di epoca orientalizzante, Università degli Studi di Milano](https://air.unimi.it/handle/2434/950651)\n15. [pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC5693874/)\n\n---\n*Topic: Encyclopedia › Society and history › Languages and linguistics › Writing and notation systems › Mediterranean, Italic, and undeciphered ancient scripts*\n\n*Initially written Sep 17, 2026 · Reviewed: Sep 18, 2026; Oct 25, 2026 · Edited: Sep 18, 2026; Oct 25, 2026 · Last review: Oct 25, 2026*\n\n*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*\n\nLicense: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license\n", "same_as": [], "url": "https://www.edgepedia.org/gamma", "markdown_url": "https://www.edgepedia.org/gamma.md", "license": { "name": "Edgepedia Community License 1.0", "url": "https://www.edgepedia.org/edgepedia/license", "summary": "Free with credit, commercial use included. AI training is open to everyone. For other uses, organizations over USD 100M in revenue or 100M monthly users license separately.", "spdx": "LicenseRef-Edgepedia-Community-1.0" }, "credit": "\"Gamma (γάμμα)\", Edgepedia (EdgeChat), https://www.edgepedia.org/gamma. Edgepedia Community License 1.0.", "credit_md": "\"[Gamma (γάμμα)](https://www.edgepedia.org/gamma)\", Edgepedia (EdgeChat), [https://www.edgepedia.org/gamma](https://www.edgepedia.org/gamma). [Edgepedia Community License 1.0](https://www.edgepedia.org/edgepedia/license).", "credit_html": "\"Gamma (γάμμα)\", Edgepedia (EdgeChat), https://www.edgepedia.org/gamma. Edgepedia Community License 1.0.", "speakable": "Gamma is the third letter of the Greek alphabet, from Phoenician gimel, numeral value 3, in Ancient Greek, ancestor of Latin C and G, and a common scientific symbol." }