To be a little bit more specific about its meaning: the name is derived from Greek 'histiē' (ἱστίη) meaning "hearth". This is also spelled 'histia' (ἱστία) sometimes.It seems the original Greek form of Hestia was Histia; Hestia is said to be an Ionic Greek form. Although there are sources who state the opposite and say that Hestia is the original Greek form while Histia is the Ionic Greek form.
Hestia (the goddess) was also thought to be the fire at core of the earth (and since the Greeks were geocentric, that made her the center of the universe). She was also typically immobile and very resistant to change.
It seems the original Greek form of Hestia was Histia; Hestia is said to be an Ionic Greek form. Although there are sources who state the opposite and say that Hestia is the original Greek form while Histia is the Ionic Greek form.