Where does “συνοπτικός” come from?

συνοπτικός (Ancient Greek) comes from Ancient Greek σύνοψις, from Ancient Greek ὄψις, from Ancient Greek ὄψ, from Proto-Hellenic wókʷs, from Proto-Indo-European wekʷ- — to speak, to sound out.

συνοπτικός (Ancient Greek): seeing the whole together or at a glance