Middle and New Kingdoms - KꜢ-ḥr-KꜢ, Greek - Khoiák, Coptic - Kiahk. The fourth month of the flooding season is from the phrase kꜣ ḥr kꜣ - “soul upon soul” - a name of the god Apis, a sacred bull who serves as an intermediary between human beings and the gods.
Book of Months