1660s, from Late Latin pandemus, from Greek pandemos "pertaining to all people; public, common," from pan- "all" (see pan-) + dēmos "people" (see demotic). Modeled on epidemic. The noun is first recorded 1853, from the adjective.
pancake
panchen
pancreas
pancreatitis
panda
pandemic
pandemonium
pander
pandiculation
Pandora
pane