V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

JRE
       Java Runtime Environment (Java)


The Free On-line Dictionary of Computing (30 December 2018):

Java Run-Time Environment
JRE

    (JRE) The part of the Java Development Kit
   required to run Java programs.  The JRE consists of the Java
   Virtual Machine, the Java platform core classes and
   supporting files.  It does not include the compiler, debugger
   or other tools present in the JDK.  The JRE is the smallest
   set of executables and files that constitute the standard Java
   platform.

   (1998-11-30)