τρισίν (trisin)
τρισίν is an Ancient Greek form of τρεῖς, meaning “three”. It is the dative plural feminine adjective.
Found 194 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 7.34.3: οἱ δ’ Ἀθηναῖοι ἐκ τῆς Ναυπάκτου τριάκοντα ναυσὶ καὶ τρισίν (ἦρχε δὲ αὐτῶν Δίφιλος) ἐπέπλευσαν αὐτοῖς.
Diogenes Laertius, Vitae philosophorum 4.10.67: … ιβλία συνέγραψε. καὶ διεδέξατο τὸν Καρνεάδην καὶ τὰ αὐτοῦ μάλιστα διὰ τῶν συγγραμμάτων ἐφώτισεν. ἀνὴρ ἐν ταῖς τρισὶν αἱρέσεσι διαπρέψας, ἔν τε τῇ Ἀκαδημαϊκῇ καὶ περιπατητικῇ καὶ στωικῇ. Καθόλου δὲ τοὺς Ἀκαδημαϊκοὺς ὁ Τίμων οὕτ …
All forms of τρεῖς (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.