LATIN DICTIONARYLexicon Latīnum
noun · neuter

archipelagus1

archipelagus n (genitive archipelagī)
Classical[ar.kʰɪˈpɛ.ɫa.ɡʊs]Ecclesiastical[ar.kiˈpɛː.la.ɡus]

Meaning

  1. New Latinneuterarchipelago: a collection of islands

Declension

declension
formsingularplural
nominativearchipelagusarchipelagē
genitivearchipelagīarchipelagōrum
dativearchipelagōarchipelagīs
accusativearchipelagusarchipelagē
ablativearchipelagōarchipelagīs
vocativearchipelagusarchipelagē

Origins

Borrowed from Italian arcipelago, semantically shifted from Byzantine Greek Ἀρχιπέλαγος (Arkhipélagos) "the greatest of seas" (as the Grecian elements archi- and pelagus imply) to "a collection of islands", possibly due it being over-imposed in maps of the island-rich Aegean Sea.

proper noun · neutersecond declension
Archipelagus2
Archipelagus n sg (genitive Archipelagī)

Meaning

  1. New Latinneutersingularsynonym of Aegaeum mare
    […] Mare Ægæum ſiue Archipelagus, […]1615, Politicarum dissertationum, page 773:

Declension

declension
formsingularplural
nominativeArchipelagus—
genitiveArchipelagī—
dativeArchipelagō—
accusativeArchipelagus
Archipelagum		—
ablativeArchipelagō—
vocativeArchipelagus—

Origins

Borrowed from Byzantine Greek Ἀρχιπέλαγος (Arkhipélagos), from ἀρχι- (arkhi-, “main”) + πέλαγος (pélagos, “sea”), literally “the Main Sea”. By surface analysis, archi- + pelagus.

Descendants
  • FrenchArchipélaguefrom Middle French Archipelague

Quick answers

What does archipelagus mean in Latin?
archipelagus, a noun, means “archipelago: a collection of islands”.
What is the genitive of archipelagus?
The genitive singular is archipelagī. archipelagus is neuter.
How do you pronounce archipelagus?
In classical Latin, [ar.kʰɪˈpɛ.ɫa.ɡʊs]; in ecclesiastical (church) Latin, [ar.kiˈpɛː.la.ɡus].