Etymology and origin of the Ancient Greek word ἑβδομάς
- Confidence
- Established
- Formation
- Derivation
- First attested
- 700–500 BC Solon
- Ultimate origin
- Ancient Greek ἑπτά
Pronunciation
Forms
ἑβδομᾰ́ς (hebdomás) f (genitive ἑβδομᾰ́δος); third declension[1]
Etymology
It is formed from Ancient Greek ἕβδομος (hébdomos, “seventh”) + -άς (-ás), and the ordinal is itself formed from ἑπτά (heptá, “seven”).[1][2]
Earliest recorded meaning
Its first record is in Solon, where it means a period of seven years in a human life.[3][4][5]
Semantic evolution
Besides seven years, the word could mean any group of seven: the number seven itself, seven of anything (an epigram counts two sevens of Niobe's children), and above all seven days, a week.[4][3][5] The medical writers counted the course of diseases and of the growing embryo in such weeks, and a work ascribed to Hippocrates was titled “On Sevens”.[3] Aristotle reports the division of life into seven-year ages.[3][4]
In the Septuagint the word is the Jewish week, and the “feast of weeks” is named after it; the word can also mean the sabbath itself or, in Daniel, a week of years.[6][3] Josephus too uses it for the sabbath.[7][3] Babiniotis traces the week of seven days that is still used to the Jewish calendar.[2]
Medieval Greek kept it as εβδομάδα (evdomáda) (also βδομάδα (vdomáda)), built on the accusative, and used it for a week and, in the phrase “a week of years”, for seven years.[8][9] In Modern Greek εβδομάδα (evdomáda) is the week, and Holy Week before Easter is the “Great Week”.[9] Latin borrowed the word as Latin hebdomas, from which English took hebdomad in the 16th century.[10][11]
Timeline
- 7th–6th century BC – Solon uses it for a period of seven years.[3][4]
- 5th century BC – Empedocles and the Hippocratic writers count in weeks of seven days.[3]
- 4th century BC – Aristotle mentions dividing human life into periods of seven years.[3][5]
- 3rd–2nd century BC – The Septuagint uses it for the week, the feast of weeks and the sabbath.[6][3]
- 2nd century BC – Antipater of Sidon uses it for a group of seven.[3][4]
- 1st century AD – Josephus uses it for the sabbath, and Philo for the number seven.[7][4]
- 5th century AD – A papyrus counts three weeks of fasting.[3]
- 1100–1669 – Vernacular Greek has εβδομάδα (evdomáda) for a week.[8]
- 1540s – English borrows hebdomad through Latin, first in the sense “the number seven”.[11]
Meanings
Noun
- The number seven.[4][5]
- A group of seven.[4][3]
- A period of seven days, a week.[4][3][7]
- (Septuagint) The seventh day of the week, the sabbath.[6][3]
- A period of seven years.[4][3][5]
Related words
- ἕβδομος (hébdomos)
- ἑπτά (heptá)
- Latin hebdomas
- English hebdomad
References
- ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
- ^ a b c d e f g h i j k l m n o p Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge
- ^ a b c d e f g h i j Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
- ^ a b c d e Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
- ^ a b c Lust, Johan; Eynikel, Erik; Hauspie, Katrin (2003), Greek-English Lexicon of the Septuagint, rev. ed., Stuttgart: Deutsche Bibelgesellschaft
- ^ a b c Bauer, Walter; Danker, Frederick W., et al. (2000), A Greek-English Lexicon of the New Testament and Other Early Christian Literature, 3rd ed., Chicago: University of Chicago Press
- ^ a b Kriaras, Emmanuel, Επιτομή του Λεξικού της μεσαιωνικής ελληνικής δημώδους γραμματείας 1100–1669, Κέντρο Ελληνικής Γλώσσας, https://www.greek-language.gr
- ^ a b Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki
- ^ Saalfeld, Günther Alexander (1874), Index Graecorum vocabulorum in linguam latinam translatorum, Berlin: Weidmann
- ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Borrowed into
- Latin hebdomada
Cite this entry
“Ἑβδομάς.” Etymologically, 1 Nov. 2026, etymologically.com/grc/%E1%BC%91%CE%B2%CE%B4%CE%BF%CE%BC%CE%AC%CF%82. Accessed 2 Nov. 2026.
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