en·ta·moe·ba 
(ĕn′tə-mēbə)
(ĕn′tə-mēbə)n. pl. en·ta·moe·bas or en·ta·moe·bae (-bē)
Any of several parasitic amoebas of the genus Entamoeba, especially E. histolytica, causing dysentery and ulceration of the colon and liver.
[New Latin Entamoeba, genus name : ENT(O)- + AMOEBA.]