单词	preexperimental
释义	preexperimental adjective pre·​ex·​per·​i·​men·​tal ˌprē-ik-ˌsper-ə-ˈmen-tᵊl   also  -ˌspir- variants or pre-experimental or less commonly preexperiment ˌprē-ik-ˈsper-ə-mənt   also  -ˈspir- or pre-experiment 1 : existing or occurring before an experiment a preexperimental questionnaire 2 : of or relating to a simple study or plan for research that typically lacks randomization and inclusion of a control group pre-experimental research design Word History First Known Use 1897, in the meaning defined at sense 1
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