The Hebrew adjective adamdam means "reddish," a descriptive term derived from the root adam (red/earth). It appears in Leviticus in the context of priestly diagnosis of skin diseases and mold in garments or houses.
The repeated use of adamdam in Leviticus 13-14 reflects the meticulous concern for ritual purity in Israel's covenant community. These purity laws find their fulfillment in Christ, who cleanses not just skin but the innermost soul (Hebrews 9:14).