Strong's #1793: entugchano (pronounced en-toong-khan'-o)
 from 1722 and 5177; to chance upon, i.e. (by implication) confer with; by extension to entreat (in favor or against):--deal with, make intercession.
Thayer's Greek Lexicon:
 ̓́ 
 
  entugchanō 
 
 1) to light upon a person or a thing, fall in with, hit upon, a person or a thing
 2) to go to or meet a person, especially for the purpose of conversation, consultation, or supplication
 3) to pray, entreat
 4) make intercession for any one
 
  Part of Speech: verb
Relation: from G1722 and G5177
  Citing in TDNT: 8:242, 1191
 
Usage:
This word is used 5 times:
Acts 25:24: "multitude of the Jews  have dealt with me, both at Jerusalem,"
Romans 8:27: "of the Spirit, because  he maketh intercession for the saints according to the will of God."
Romans 8:34: "of God, who also  maketh intercession for us."
Romans 11:2: "saith of Elijah? how  he maketh intercession to God against Israel,"
Hebrews 7:25: "him, seeing he ever liveth  to make intercession for them."