#2515 καθέδρα kathedra {kath-ed'-rah}

 from G2596 and the same as G1476; TDNT - n/a; n f

—Greek Word Study (Transliteration-Pronunciation Etymology & Grammar)

 1) a chair, a seat
    1a) used of the exalted seat occupied by men of eminent rank or
        influence, as teachers and judges

—Thayer's (New Testament Greek-English Lexicon)

—Strong's (Greek Dictionary of the New Testament)

—NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries

 AV - seat 3; 3

—Exhaustive Concordance (KJV Translation Frequency & Location)