From Middle English emerowdes, emeroides, emeroydez, from Old French emorroides, from Latin haemorrhoidae, from Ancient Greek αἱμορροΐς (haimorrhoḯs), a feminine adjective from αἱμόρροος (haimórrhoos, “flowing with blood”), from αἷμα (haîma, “blood”) and the root of ῥέω (rhéō, “flow”). Doublet of emerod.