Strong's:Σάρδεις Sardis, a place in Asia MinorDerivation: plural of uncertain derivation;KJV Usage: Sardis.
TBESG:ΣάρδειςSardisN:N-F-L Σάρδεις, -εων, αἱ Sardis, the chief city of Lydia: Refs Rev.1:11 3:1, 4 (AS)
Σάρδεις Sardeis sar'-dice Plural of uncertain derivation; Sardis, a place in Asia MinorKJV Usage: Sardis.