telephony

noun

Etymology: Etymology tree Proto-Indo-European *kʷelh₁-der. Ancient Greek τῆλε (têle)lbor. French télé- Proto-Indo-European *bʰeh₂-der. Proto-Hellenic *pʰōnā́ Ancient Greek φωνή (phōnḗ)der. French -phone French téléphonebor. English telephone English -y English telephony From telephone + -y.

1. The act of sound transmission via the electromagnetic spectrum.
2. The study and application of telephone technology.