Strong's #155: aitema (pronounced ah'-ee-tay-mah)
 from 154; a thing asked or (abstractly) an asking:--petition, request, required.
Thayer's Greek Lexicon:
 ̓́ 
 
  aitēma 
 
 1) petition, request, required
 
  Part of Speech: noun neuter
Relation: from G154
  Citing in TDNT: 1:193, 30
 
Usage:
This word is used 3 times:
Luke 23:24: "Pilate gave sentence that it should be  as they required."
Philippians 4:6: "with thanksgiving let your  requests be made known unto God."
1 John 5:15: "we know that we have the  petitions that we desired of"