Etymology and origin of the Latin word aqueus
- Confidence
- Established
- Formation
- Derivation
- First attested
- 334–337 Firmicus Maternus, Mathesis More words from the 4th century
- Ultimate origin
- Latin aqua
Etymology tree
From the same root
Forms
aqueus (feminine aquea, neuter aqueum); first/second-declension adjective[1]
Etymology
It is formed from Latin aqua (“water”) + -eus.[1][2][3]
Earliest recorded meaning
The earliest record is in Firmicus Maternus' astrological Mathesis, which calls a sign of the zodiac “watery”, in contrast to an earthy one.[2][3]
Semantic evolution
Otherwise the word belongs to Medieval Latin.[4] Medieval writers on science used it for what consists of or contains water and for what resembles water, in anatomy, of the sky, and of creatures living in water.[5][6] Gervase of Tilbury spoke of a watery heaven that touches and moistens the earth, and British writers also used it for wet or rainy weather.[6]
In Neo-Latin medicine the humor aqueus appears in descriptions of dropsy.[7] Italian acqueo comes from the medieval Latin word.[4]
Timeline
- 334–337 AD – Firmicus Maternus speaks of a watery sign of the zodiac.[2][3]
- 1209–1214 – Gervase of Tilbury describes a watery heaven below the airy one.[6][3]
- 1640s – English aqueous is formed from Latin aqua.[8]
Meanings
Adjective
- Consisting of water, containing water, aqueous.[2][5][6]
- (Medieval Latin) Like water, watery.[5]
- (Medieval Latin) Living in water.[5]
- (Medieval Latin) Wet, rainy.[6]
Related words
References
- ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
- ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
- ^ a b c d Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
- ^ a b c d e 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
- ^ Ramminger, Johann, Neulateinische Wortliste: Ein Wörterbuch des Lateinischen von Petrarca bis 1700, www.neulatein.de
- ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry
“Aqueus.” Etymologically, 7 Nov. 2026, etymologically.com/la/aqueus. Accessed 8 Nov. 2026.
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