- Confidence
- Established
- Formation
- Derivation
- First attested
- Ennius
- Ultimate origin
- Latin (aequus)
Pronunciation
Forms
aequor n (genitive aequoris); third declension[1] Varro has the spelling aecor.[2]
Etymology
It is from aequus “level, flat”.[2][3][1] De Vaan reconstructs ⟨aequus⟩ as probably ⟨*aikwos⟩, without a convincing etymology.[4] Wiktionary suggests that the shift to “sea” may have been helped by the unrelated aqua.[1]
Earliest recorded meaning
Köbler's earliest source is Ennius, and the OLD's earliest citation is Accius, of a level surface.[5][2] Köbler dates Ennius 204–169 BC and Accius 170–c. 90 BC.[5]
Semantic evolution
It meant any smooth or level surface; a level stretch of ground, a plain, as in Varro and Cicero; above all in poetry the sea, especially as calm and flat; and in Ovid the waters of a river.[2][6] Lewis & Short note that it is mostly poetic, found only once in Cicero and once in Sallust.[7]
In Ecclesiastical Latin it means the sea.[8] British Medieval Latin used it for a plain and the sea.[9]
Timeline
- 204–169 BC – Ennius uses it.[5]
- 170–c. 90 BC – Accius uses it of a level surface.[2][5]
- 116–27 BC – Varro uses it of a plain and of the sea.[2][5]
- 43 BC–18 AD – Ovid uses it of a river.[2][5]
Meanings
Noun
Word family
- aequoreus
Related words
Usage notes
Isidore of Seville derived aequor from aqua and also explained it as the sea that settles level again after storms.[10]
References
- ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
- ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
- ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
- ^ 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
- ^ Isidore of Seville, Etymologiarum sive Originum libri XX, ed. W. M. Lindsay (Oxford, 1911).
Cite this entry
“Aequor.” Etymologically, 17 Oct. 2026, etymologically.com/la/aequor. Accessed 17 Oct. 2026.
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