acrord32.exe is the Adobe Acrobat Reader. This process is needed when you want to open and view PDF documents, and can be downloaded from Adobe.com This program is non-essential process to the running of the system, but should not be terminated unless suspected to be causing problems.
Non-system processes like acrord32.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that over time your registry suffers fragmentation and accumulates invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues