Kalmar "entozoan" yawanci ana rubuta ta da "entozoon," kuma tana nufin kwayar cutar parasitic da ke zaune a cikin jikin wata kwayar halitta. Ana amfani da kalmar yawanci dangane da ƙwayoyin cuta waɗanda ke rayuwa a cikin kyallen takarda ko gabobin mai masaukinsu, kamar tsutsotsi, tsutsotsi, ko mura. A wasu kalmomi, entozoon wani nau'i ne na endoparasite.
