I can't think of the word and it's driving me nuts. I'm looking for a word that can be used when some technology is discovered, way of thinking, or even event happening that causes a big change in society.
Examples might be: discovery of electricity, industrial revolution, nuclear power / bomb, the internet.
Some similar terms I can think of are: dawn of a new era, a new age, or paradigm shift.
EDIT: I just want to add that I'm thinking of a lesser used word, although revolutionary fits it's not specific enough nor the word that I'm looking for.