Heliocentrism definition

From Greek ηλιοκεντρικός (heliokentrikos) "having the sun as his centre", from ancient Greek ήλιος (helios) "sun" + κέντρον (kentron) "centre".

The theory of the heliocentric model, that the planets including Earth orbit the Sun, in contrast to geocentrism.
A now-defunct theory that all primitive cultures worshipped the Sun and its movements and patterns.
An obsession with the Sun and its movements and patterns.