Strong's #4473: rhantismos (pronounced hran-tis-mos')
 from 4472; aspersion (ceremonially or figuratively):--sprinkling.
Thayer's Greek Lexicon:
 ̔́ 
 
  rhantismos 
 
 1) a sprinkling (purification)
 
 1a) blood of sprinkling
 
 1a1) i.e. appointed for sprinkling (serving to purify)
 
  Part of Speech: noun masculine
Relation: from G4472
  Citing in TDNT: 6:976, 984
 
Usage:
This word is used 2 times:
Hebrews 12:24: "covenant, and to the blood  of sprinkling, that speaketh better things than that of Abel."
1 Peter 1:2: "unto obedience and  sprinkling of the blood of Jesus Christ: Grace"