pelagi
pelagi is a Latin form of pelagus, meaning “the sea, open sea”. It is the genitive singular neuter noun.
Found 125 times in the Latin texts on Socratos.
Where it is used
Vergil, Georgics 1.383: Iam variae pelagi volucres et quae Asia circum
Vergil, Aeneid 6.532: attulerint. Pelagine venis erroribus actus,
All forms of pelagus (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.