The story
- Proto-Indo-European*h₁én
- Proto-Indo-European*h₁énteros
- Latin*interus
- Latinintrā
- Englishintra-
- Frenchtélé-
- Proto-Indo-European*bʰeh₂-
- Proto-Hellenic*pʰōnā́
- Ancient Greekφωνή (phōnḗ)
- Frenchtéléphone
- Englishtelephoneclip.
- Englishphone
- English todayintraphone
Etymology from Wiktionary, CC BY-SA 4.0.