Etymology and origin of the Latin word plagius
Forms
plagius (feminine plagia, neuter plagium); first/second-declension adjective[1][2]
Etymology
It is borrowed from Ancient Greek πλάγιος (plágios, “slanting, sideways”).[1][2]
Earliest recorded meaning
The TLL's first example is from the Astronomica of Hyginus, where the constellation Arctophylax rises plagius, “sideways”.[2] The OLD defines it as placed sideways, horizontal.[1]
Semantic evolution
An Old Latin version of Deuteronomy uses the neuter as a noun, “at the side” of the ark, translating the Greek; the TLL also records it of a shore where ships can put in.[2] Köbler finds it in the Antonine Itinerary.[3]
In medieval Latin plagius was one of the forms of a noun for a beach or a mountain slope.[4][3] The TLL traces a number of Romance words for a shore or slope to it, among them Italian piaggia and spiaggia, Catalan platja and, through Italian, French plage.[2] In music it described the plagal modes, whence plagalis.[5][6]
Timeline
- 2nd half of the 1st century BC – Hyginus uses it of a constellation rising sideways.[2][3]
- 3rd century AD – It occurs in the Antonine Itinerary.[3]
Meanings
Adjective
- Placed sideways, slanting, horizontal.[1][2]
- (neuter as noun) The side of something.[2]
- Of a shore: where ships can put in.[2]
- (Medieval Latin, music) Plagal (of a mode).[5][6]
Noun
Usage notes
The DMLBS has a separate medieval plāgius, “one who wounds; a surgeon”, formed from plāga “wound”, which the Catholicon Anglicum of 1483 records.[7][3]
References
- ^ a b c d Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b c d e f g h i Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
- ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
- ^ a b Lexicon mediae et infimae Latinitatis Polonorum (1953–), Kraków: Instytut Języka Polskiego PAN; electronic ed. elexicon.scriptores.pl
- ^ a b Lexicon musicum Latinum medii aevi (1992–), Munich: Bayerische Akademie der Wissenschaften; online ed. Wörterbuchnetz
- ^ 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
Related etymologies
Cite this entry
“Plagius.” Etymologically, 24 Oct. 2026, etymologically.com/la/plagius. Accessed 24 Oct. 2026.
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