Word origin
[1945–50; ‹ Gk
deîxis lit., proof, display, equiv. to
deik(
nýnai) to show, prove, point +
-sis -sis]This word is first recorded in the period 1945–50. Other words that entered Englishat around the same time include: fail-safe, on-line, poison pill, spin-off, synchronized swimming