Etymologically

Etymology and origin of the Latin word coma

Confidence
Established
Formation
Borrowing
First attested
204–169 BC, Ennius
Borrowed from
Ancient Greek κόμη
Ultimate origin
Ancient Greek κόμη
Etymology tree
inherited borrowed derived
Latin coma
English coma
From the same root
Latin comans ← coma
Latin comatus ← coma

Pronunciation

  • Classical: [ˈkɔ.ma][1]
  • Ecclesiastical: [ˈkɔː.ma][1]

Forms

coma f (genitive comae); first declension[1]

Etymology

It is borrowed from Ancient Greek κόμη (kómē, “hair of the head”).[2][3][4][5][1] The further origin of the Greek word is unknown.[6][5]

Earliest recorded meaning

Köbler finds it first in Ennius,[5] who has comīs passīs, with hair let loose;[2] Pacuvius describes hair that is long, uncombed, matted and rough.[2]

Semantic evolution

It was above all the hair of the head, often as an ornament,[2][3] and Festus defines comae as hair arranged with some care.[3] Cicero has calamistrata coma, hair curled with the iron, but the word is very rare in him and belongs mostly to poetry and post-Augustan prose.[3] It was used of a lion's mane, the snakes of the Furies, the plumes of a helmet and, in Accius, the golden fleece of a lamb.[2][3] Poets made it the “hair” of the earth and of trees: in Catullus a coma of leaves often whispers, and Horace has grass returning to the fields and leaves (comae) to the trees.[2] It also named the awns and tufts of plants and the heads of flowers, and anything resembling hair: wisps of cloud, the tail of a comet in Seneca, and rays of flame or lightning.[2][7]

In medieval Latin the cutting or laying down of the hair (coma) marked entry into the clergy or a monastery, and church rules governed the hair of clerics.[8] Writers used it for the tail of a comet,[9][8] and in music for the stem of a note.[8] English took it as a botanical term in the 1660s and for the hazy head of a comet in 1765.[6]

Timeline

  • 204–169 BC – Ennius writes of loosened hair.[2][5]
  • 220–130 BC – Pacuvius describes long, matted hair.[2][5]
  • 170–c. 90 BC – Accius uses it of the golden fleece.[2][3][5]
  • 81–43 BC – Cicero speaks of curled hair.[3][10][5]
  • 70–19 BC – Virgil uses it of a lion's mane.[2][5]
  • 4 BC–65 AD – Seneca uses it of the tail of a comet.[2][5]
  • 1660s – English takes it as a botanical term.[6]
  • 1765 – English uses it for the envelope round the head of a comet.[6]

Meanings

Noun

  1. The hair of the head; a lock of hair.[2][3][1]
  2. The mane of an animal; the plume of a helmet.[2][3]
  3. Fleece, wool.[2][7]
  4. Foliage, leaves; the tuft or awn of plants; the heads of flowers.[2][3][1]
  5. Something resembling hair: wisps of cloud, the tail of a comet, rays of flame or light.[2][7][10][9]
  6. (Medieval Latin, music) The stem of a note.[8]

Word family

  • bicomis
  • comans
  • comātōrius
  • comōsus
  • comula
  • albicomus
  • alticomus
  • anguicomus
  • auricomus
  • flammicomus
  • flōricomus
  • comātus

Usage notes

The MLW has a separate neuter coma, genitive comatos, from Ancient Greek κῶμα (kôma, “deep sleep”), meaning sleep or lethargy in the Latin Paul of Aegina and in Constantine the African;[8][5] English coma “prolonged unconsciousness” (1640s) comes from the Latinized form of the Greek word.[6]

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 p q Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e f g h i j Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ Saalfeld, Günther Alexander (1874), Index Graecorum vocabulorum in linguam latinam translatorum, Berlin: Weidmann
  5. ^ a b c d e f g h i j Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ a b c Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  8. ^ a b c d e Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  9. ^ a b Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
  10. ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.

Derived terms

Borrowed into

Related etymologies

Cite this entry

“Coma.” Etymologically, 23 Oct. 2026, etymologically.com/la/coma. Accessed 23 Oct. 2026.

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