Etymologically

Etymology and origin of the Latin word sinuo

Confidence
Established
Formation
Derivation
First attested
70–19 BC, Virgil
Ultimate origins
Proto-Italic (*sinu-)Latin (-o)
Etymology tree
inherited borrowed derived
Latin sinus
French sein
Latin sinuosus
Latin sinuo

Pronunciation

  • Classical: [ˈsɪ.nu.oː][1]
  • Ecclesiastical: [ˈsiː.nu.o][1]

Forms

sinuō (present infinitive sinuāre, perfect active sinuāvī, supine sinuātum); first conjugation[1] Silius Italicus scans sinu- as one long syllable.[2]

Etymology

It is from Latin sinus (“curve, fold”) + -ō.[2][1] De Vaan reconstructs sinus as Proto-Italic *sinu-, probably connected with Albanian gji (“breast”), with no further etymology.[3]

Earliest recorded meaning

Virgil uses it of the serpent that winds its huge back in coils: sinuat immensa volumine terga.[4][5] Lewis & Short think it perhaps not found before the Augustan age.[4]

Semantic evolution

It is to bend or curve something, as a flame bent three times into a slanting torch in Propertius,[2] to bend a bow, as in Ovid,[2] and to give a curved shape to features of a landscape, as Ovid's stream bent into curving arcs.[2] Of the wind it is to billow out sails or clothes, as Ovid's garments fluttering in the breeze.[2] It is also to make something move in curves, or to follow a winding course, as a chariot axle in Silius Italicus,[2] and Celsus uses it of fluid that hollows out the sound flesh near it.[2] Lewis & Short find it most often in the poets.[4] In Church Latin it is to bend, wind, curve or swell.[6]

Timeline

  • 70–19 BC – Virgil, of a serpent winding its coils.[4][5]
  • 57/46–12 BC – Propertius, of a curving flame.[2][5]
  • 43 BC–18 AD – Ovid, of a bent bow and billowing clothes.[2][5]
  • 14–37 AD – Celsus, of hollowing out flesh.[2][5]

Meanings

Verb

  1. To bend, wind, curve; to bend (a bow).[2][4][1]
  2. Of the wind: to billow out, fill out.[2]
  3. To make move in curves; to follow a winding course.[2]
  4. To hollow out, excavate.[2][1]

Word family

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. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  4. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
Cite this entry

“Sinuo.” Etymologically, 20 Oct. 2026, etymologically.com/la/sinuo. Accessed 20 Oct. 2026.

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