Why is it die Telefonie?
Telefonie ends in -ie, and nouns ending in -ie are feminine: in a German dictionary, 98% of them take die.
All nouns ending in -ie die
Meaning
[1] Technology of voice transmission from a distance
[1] Technik der Sprachübertragung aus der EntfernungExamples
[1] The employee logs in at the respective workplace and, thanks to telephony based on the IP basis, not only takes email address, but also his telephone number automatically
[1] Der Mitarbeiter loggt sich am jeweiligen Arbeitsplatz ein und nimmt dank Telefonie auf IP-Basis nicht nur E-Mail-Adresse, sondern auch seine Telefonnummer automatisch mit.
[1] Thanks to the mobile telephony, such forced acts also dominate public life - ready to help us in every situation, no matter how inappropriate
[1] Dank der mobilen Telefonie beherrschen solche Zwangshandlungen auch das öffentliche Leben – bereit, uns in jeder noch so unpassenden Situation zu ereilen.
More source examples (1)
These dictionary examples can include historical and less common uses.
Declension
| 1 | Singular | Plural |
|---|---|---|
| Nominativ | die Telefonie | — |
| Genitiv | der Telefonie | — |
| Dativ | der Telefonie | — |
| Akkusativ | die Telefonie | — |
Pronunciation
Dictionary entries include material from Wiktionary. Wiktionary