a combining form, meaning “city,” appearing in loanwords from Greek (metropolis), and used in the formation of placenames (Annapolis).
Origin of -polis
combining form representing Greek pólis polis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
word-forming element meaning "City," from Greek polis "city" (see polis).
Online Etymology Dictionary, © 2010 Douglas Harper