τετράς

Ancient Greek

Alternative forms

• πετρᾰ́ς (petrás) — Boeotian

Etymology

From Proto-Indo-European *kʷetwóres (whence also τέσσαρες (téssares, “four”)) + -ᾰ́ς (-ás).

Pronunciation

 

• IPA^(key): /te.trás/ → /teˈtras/ → /teˈtras/

• (5^th BCE Attic) IPA^(key): /te.trás/
• (1^st CE Egyptian) IPA^(key): /teˈtras/
• (4^th CE Koine) IPA^(key): /teˈtras/
• (10^th CE Byzantine) IPA^(key): /teˈtras/
• (15^th CE Constantinopolitan) IPA^(key): /teˈtras/

Noun

τετρᾰ́ς • (tetrás) f (genitive τετρᾰ́δος); third declension

1. the number four
   1. the fourth day of the month
   2. the fourth day of the week
   3. a period of four days
   4. the four quarters of the moon
2. tetrarchy
3. four-leaved pamphlet, quaternion

   Synonym: τετράδιον (tetrádion)

Inflection

Third declension of ἡ τετρᾰ́ς; τῆς τετρᾰ́δος (Attic)

Case / #	Singular	Dual	Plural
Nominative	ἡ τετρᾰ́ς hē tetrás	τὼ τετρᾰ́δε tṑ tetráde	αἱ τετρᾰ́δες hai tetrádes
Genitive	τῆς τετρᾰ́δος tês tetrádos	τοῖν τετρᾰ́δοιν toîn tetrádoin	τῶν τετρᾰ́δων tôn tetrádōn
Dative	τῇ τετρᾰ́δῐ têi tetrádi	τοῖν τετρᾰ́δοιν toîn tetrádoin	ταῖς τετρᾰ́σῐ / τετρᾰ́σῐν taîs tetrási(n)
Accusative	τὴν τετρᾰ́δᾰ tḕn tetráda	τὼ τετρᾰ́δε tṑ tetráde	τᾱ̀ς τετρᾰ́δᾰς tā̀s tetrádas
Vocative	τετρᾰ́ς tetrás	τετρᾰ́δε tetráde	τετρᾰ́δες tetrádes
Notes:	This table gives Attic inflectional endings. For declension in other dialects, see Appendix:Ancient Greek dialectal declension. Nominative singular -ς (-s) arose by reduction of the original cluster *-ds.

Derived terms

• τετράδιον (tetrádion)
• τετρακτύς (tetraktús)

Descendants

• → Old Armenian: տետր (tetr)
• → Russian: тетра́дь (tetrádʹ)
• → Bulgarian: тетра̀дка (tetràdka)

References

• “τετράς”, in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
• “τετράς”, in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
• τετράς in Bailly, Anatole (1935) Le Grand Bailly: Dictionnaire grec-français, Paris: Hachette
• Sophocles, Evangelinos Apostolides (1900) “τετράς”, in Greek Lexicon of the Roman and Byzantine Periods (from B. C. 146 to A. D. 1100), New York: Charles Scribner’s Sons, page 1078b