ˌek.sɪˈkjuː.ʃən ˌɪmplɪmənˈteɪʃn ˌɪmpləmənˈteɪʃən ˈmɜːdə(ɹ) ˈmɝ.dɚ pəɹ.ˈfɔɹ.məns ˈsleɪɪŋ the act of performing; of doing something successfully; using knowledge as distinguished from merely possessing it they criticized his performance as mayor experience generally improves performance unlawful premeditated killing of a human being by a human being the act of accomplishing some aim or executing some order the agency was created for the implementation of the policy putting a condemned person to death a routine court order that attempts to enforce the judgment that has been granted to a plaintiff by authorizing a sheriff to carry it out (law) the completion of a legal instrument (such as a contract or deed) by signing it (and perhaps sealing and delivering it) so that it becomes legally binding and enforceable (computer science) the process of carrying out an instruction by a computer