Lexical Definition

‎Σιών‎ Siṓn (see-own') Zion ^N:N--L
of Hebrew origin (‎צִיּוֹן‎)

Sion.

• Sion (i.e. Tsijon), a hill of Jerusalem
• figuratively, the Church (militant or triumphant)

Abbott-Smith

Σιών
indecl.,
in NT anarth., but in LXX when used of the city of Jerusalem, ἡ Σ. (Heb. צִיּוֹן),
Zion;
1. the mountain: in typical sense, of the Church, He 12:22; of heaven, Re 14:1.
2. The city, i.e. Jerusalem; in poetical sense;
(a) of the inhabitants: θυγάτηρ Σ, Mt 21:5, Jo 12:15 (LXX);
(b) in wider sense, of Israel: Ro 11:26;
(c) fig.: τίθήμι ἐν Σ λίθον, Ro 9:33, I Pe 2:6 (LXX).†

Abbott-Smith References