πῖ Π, π, πῖ, indecl.: sixteenth letter of Gr. alphabet. As numeral π 80, but , π 80, 000. π is the tenuis labial mute, related to the medial β and the aspirate φ. Changes of π in the Gr. dialects, etc. π becomes φ, βλέπ-ω βλέφ-αρον, λάπ-τω λαφ-ύσσω. in Aeolic and Ionic, it stands for the asp. φ, ἀμπί for ἀμφί, πανός for φανός, ἀπικέσθαι for ἀφικ-: in Ionic it was retained in apostrophe before an aspirate, ἀπʼ ἡμῶν, ἐπʼ ἡμέρην, ὑπʼ ὑμῶν, etc.: on the contrary the aspirated form was preferred in Attic, ἀσφάραγος for ἀσπάραγος, σφόνδυλος for σπόνδυλος. in Ionic Prose, π becomes κ in relatives and interrogatives, κῶς ὅκως ὁκοῖος ὁκόσος for πῶς ὅπως ὁποῖος ὁπόσος. in Aeolic, π is used for μ, ὄππα for ὄμμα, πεδά for μετά. in Aeolic and Doric, π for τ, πέτορες for τέσσαρες, πέμπε for πέντε. sometimes interchanged with γ, as in λαπαρός λαγαρός, λαπάρα λαγών, λάγος lepus. in Aeolic and Epic Poetry, π is often doubled in relatives, as ὅππη ὅππως ὁπποῖος for ὅπη, etc. in Poets, τ is inserted after π, as in πτόλις, πτόλεμος for πόλις, πόλεμος.