Etymologically

astrum

Etymology and origin of the Latin word astrum

Confidence
Established
Formation
Borrowing
First attested
Cicero
Borrowed from
Ancient Greek ἄστρον
Ultimate origin
Ancient Greek (ἄστρον)
Etymology tree
inherited borrowed derived
Ancient Greek ἄστρον
English astronomy
English disaster
English astrology
Latin astrum

Pronunciation

  • IPA (Classical): [ˈas.trũː][1]
  • IPA (Ecclesiastical): [ˈas.trum][1]

Forms

astrum n (genitive astrī); second declension[1]

Etymology

It is borrowed from Ancient Greek ἄστρον (ástron, “star”).[2][1][3] Lewis & Short think it perhaps borrowed and compare the native stella, English star and Gothic 𐍃𐍄𐌰𐌹𐍂𐌽𐍉 (stairnō).[4] The TLL calls it a learned word.[5] Varro, as reported by Martianus Capella, derived astra from the name of Astraeus.[5]

Earliest recorded meaning

Cicero uses it of the fixed stars and the planets in the Tusculan Disputations.[2] Köbler dates Cicero 81–43 BC.[6]

Semantic evolution

It meant a heavenly body or star, usually in the plural, then a planet, including the sun and moon, and a constellation, especially a sign of the zodiac.[2] Lewis & Short describe it as poetic or belonging to elevated prose.[4] Döderlein distinguishes stella, any one of the countless single stars, from astrum, one of the great bright bodies such as the sun, moon and named stars, while sidus is a constellation, which is used more in astronomical and astrological contexts.[7]

In the plural it meant the sky and the heavens, of towers rising to the stars in Virgil.[2][4] From this came figurative phrases such as in astra tollere, to praise to the skies, and Virgil's sic itur ad astra, “thus one goes to the stars”, of immortal glory.[2][4] Statius uses it of a deified person.[2] In medieval Latin it also meant heaven as the seat of God and the saints, and, in Niermeyer, a hearth or home.[8][9] Through Italian disastro “ill-starred” it lies behind English disaster, recorded in the 1590s.[10]

Timeline

  • 81–43 BC – Cicero uses it of stars and planets.[2][6]
  • 70–19 BC – Virgil writes sic itur ad astra.[4][6]
  • 1st century AD – Manilius uses it of the signs of the zodiac.[2][6]
  • c. 45–96 AD – Statius uses it of a deified person.[2][6]
  • 1590s – English disaster is recorded, from its Italian derivative.[10]

Meanings

Noun

  1. A heavenly body, a star.[2][1]
  2. A planet.[2]
  3. A constellation, a sign of the zodiac.[2][1]
  4. (plural) The sky, the heavens.[2]
  5. (figurative) in astra tollere, to extol to the skies.[2]
  6. A deified person.[2]
  7. (Medieval Latin) A hearth, home.[9]

Word family

  • astrālis
  • astricus
  • astrifer
  • astrificō
  • astrificus
  • astriger
  • astriloquus
  • astrilucus
  • astrisonus
  • astrōsus

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ Saalfeld, Günther Alexander (1874), Index Graecorum vocabulorum in linguam latinam translatorum, Berlin: Weidmann
  4. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  6. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  7. ^ Döderlein, Ludwig (1874), Döderlein’s Hand-book of Latin Synonymes, tr. H. H. Arnold, Andover: W. F. Draper
  8. ^ Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  9. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  10. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com

Descendants

Related etymologies

Cite this entry

“Astrum.” Etymologically, 15 Oct. 2026, etymologically.com/la/astrum. Accessed 15 Oct. 2026.

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