Ma'anar ma'anar kalmar "Anerobic" ita ce "rayuwa ko aiki a cikin rashin oxygen kyauta." Saboda haka, kalmar "Anereriotic" tana nufin halittu ko matakai wanda zai iya rayuwa ko faruwa ba tare da kasancewar iskar oxygen ba. Misalin kwayoyin halitta shine kwayoyin cuta wanda zai iya rayuwa da girma a cikin yanayin oxygen kamar kasan tafkin ko a cikin narkewa na dabbobi. Hanyoyin shiga Anerobotic, kamar fermentation, kuma faruwa ba tare da amfani da oxygen ba.