Question: what is the meaning of the root word endo?
Answer: Endo, a prefix from Greek ἔνδον endon meaning "within, inner, absorbing, or containing" Endoscope, an implement used in minimally invasive surgery. Endometriosis, a disease that relates to a woman's menstrual cycle. Endogamy, the practice of marrying within a specific ethnic group, class, or social group.