Question

what is the breakdown of the word hyperlipidemia?

Answer 1

hyper- (Greek ὑπέρ) = over, excessive
lip(i)- / lip/o (Greek λίπος) = fat
-emia (Greek αἷμα) = blood condition

So hyperlipidemia literally means "excess fat in the blood" (often written hyperlipidaemia in British English).