Omphalos originated as an ancient Greek word meaning "navel" and is distantly related to two other words of the same meaning, Latin umbilicus and Old English "nafela." (The latter of these is the source of our word navel.)

What is the normal meaning of omphalos?

- From the Greek word meaning "navel"—for the round stone in the temple of Apollo at Delphi supposed to mark the center of the earth—it describes the center, heart, or hub of a place, organization, or sphere of activity. See also related terms for navel.

What is omphalos Greek mythology?

An omphalos is a religious stone artifact, or baetylus. In Ancient Greek, the word ὀμφᾰλός (omphalós) means "navel". Among the Ancient Greeks, it was a widespread belief that Delphi was the center of the world. ... Omphalos is also the name of the stone given to Cronus.