Where does “telescopable” come from?

telescopable (English) comes from English telescope, from Latin telescopium, from Italian telescopio, from Ancient Greek τηλεσκόπος, from Ancient Greek τῆλε, from Latin commūnicāre, from Latin commūnis, from Old Latin com(m)oinis — resin, gum; to say, speak.

telescopable (English): Capable of being telescoped, that is, expanded and contracted linearly in sections that slide over one another