derived from the Latin word
extendere (make even, straight, smooth; stretch, thrust out; make taut)
using the Latin prefix
ex-derived from the Late Latin word
ex (out)
derived from the Proto-Indo-European root
*eghsderived from the Latin word
tendere (to stretch; pitch tent, encamp; pull tight; stretch, spread, extend)
derived from the Proto-Indo-European root
*ten-