UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈzaɪən/US:USA pronunciation: respellingUSA pronunciation: respelling(zīən)

WordReference Random House Unabridged Dictionary of American English © 2020
Zi•on  (zīən),USA pronunciation n. 
  1. Place Names, Judaisma hill in Jerusalem, on which the Temple was built (used to symbolize the city itself, esp. as a religious or spiritual center).
  2. Judaismthe Jewish people.
  3. JudaismPalestine as the Jewish homeland and symbol of Judaism.
  4. heaven as the final gathering place of true believers.
  5. Place Namesa city in NE Illinois. 17,861.
Also,  Sion (for defs. 1–4).
  • Hebrew, as above
  • Greek (Septuagint) Seió̄n
  • Late Latin (Vulgate) Siōn
  • Hebrew sīyyōn; replacing Middle English, Old English Sion
  • bef. 1000

Collins Concise English Dictionary © HarperCollins Publishers::
Zion /ˈzaɪən/, Sion n
  1. the hill on which the city of Jerusalem stands
  2. the ancient Israelites of the Bible
  3. the modern Jewish nation
  4. Israel as the national home of the Jewish people
  5. heaven regarded as the city of God and the final abode of his elect
'Zion' also found in these entries (note: many are not synonyms or translations):
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