τριακόσια (triakosia)
τριακόσια is an Ancient Greek form of τριακόσιοι, meaning “three hundred”. It is the nominative plural neuter adjective.
Found 87 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 1.13.3: φαίνεται δὲ καὶ Σαμίοις Ἀμεινοκλῆς Κορίνθιος ναυπηγὸς ναῦς ποιήσας τέσσαρας· ἔτη δ᾽ ἐστὶ μάλιστα τριακόσια ἐς τὴν τελευτὴν τοῦδε τοῦ πολέμου ὅτε Ἀμεινοκλῆς Σαμίοις ἦλθεν.
All forms of τριακόσιοι (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.