-ία

Like -ια (-ia), from Proto-Indo-European *-i-eh₂. Cognate with Latin -ia and Proto-Slavic *-ьja.

-ῐ́ᾱ • (-ĭ́ā) f (genitive -ῐ́ᾱς); first declension

1. Added to stems of adjectives, rarely to the stems of verbs, and even more rarely to the stems of nouns, to form feminine abstract nouns

When this suffix is appended to verbal adjectives in -τός (-tós) or other stems in τ, the τ palatalizes to σ.
Example: ἄκρατος > ἀκρασία

• -ίνα (-ína)

• English: -ia
• French: -ie

• Smyth, Herbert Weir (1920) “Part III: Formation of Words”, in A Greek grammar for colleges, Cambridge: American Book Company, § 859.6

• IPA^(key): /ˈia/

-ία • (-ía) f

1. added to an adjective to create a noun denoting a country:

   ‎Γάλλος (Gállos, “French”) + ‎-ία (-ía) → ‎Γαλλία (Gallía, “France”)

   ‎Τούρκος (Toúrkos, “Turkish”) + ‎-ία (-ía) → ‎Τουρκία (Tourkía, “Turkey”)

   ‎Άγγλος (Ánglos, “English”) + ‎-ία (-ía) → ‎Αγγλία (Anglía, “England”)