Ma'anar ƙamus na "abin mamaki" shine faruwa ko gaskiyar abin mamaki; yanayin mamaki. Ita ce nau'in suna na fi'ili "don mamaki," wanda ke nufin sa wani ya ji mamaki ko mamaki kwatsam. A ka'idar bayanai, "mamaki" yana nufin adadin bayanan da wani lamari ya isar, wanda aka auna a matsayin mummunan logarithm na yiwuwarsa.
