Acquittal

In common law jurisdictions, an acquittal means that the prosecution has failed to prove that the accused is guilty beyond a reasonable doubt of the charge presented. It certifies that the accused is free from the charge of an offense, as far as criminal law is concerned. 
::* https://en.wikipedia.org/wiki/Acquittal
==“Acquitted” vs “Not Guilty” – what's the Difference?==
While an acquittal is a general term for a not guilty verdict, there is a subtle difference between the two terms under criminal law. 
* Not guilty means that a defendant is not legally answerable for the criminal charge filed against him/her. 
* An acquittal is a finding by a judge or jury that a defendant is not guilty of the crime charged.
Note that an acquittal does necessarily not mean that the defendant is innocent in a criminal case. 
Rather, it means that the prosecutor failed to prove that the defendant was guilty “beyond a reasonable doubt.”
Note too that an acquittal is not the same thing as when charges get dismissed. 
:A dismissal comes before a jury trial and usually takes place because:
::the prosecutor does not believe there is enough evidence to support the case, or
::the judge decides a case lacks sufficient support to go forward.
:In a dismissal, the case against the defendant ends and he/she does not have to stand trial.
If a judge or jury acquits a defendant, then double jeopardy attaches and the defendant has a complete defense to an additional prosecution for the same offense in the same jurisdiction.