You searched for: “pertaining to the navel”
A unit related to: “pertaining to the navel”
umbili-, umbil-
(Latin: pertaining to the navel, umbilical cord; a protuberance or swelling; related to umbo, the boss [a convex elevation or knob] of a shield)
omphalo-, omphal-
(Greek: navel, umbilicus; pertaining to the navel or to the umbilicus)