Not really a game specific question.
But in game, if you have a conventional start. The general assumption is that your species discovers and begins researching TransNewtonian materials (like Duranium and Sorium), and integrates them in everything form industry to ship design. Before this, your species one would assume builds most of their stuff out of traditional/conventional Newtonian materials.
Assuming that after you maxed out the research tree, a new option came available. After decades possibly centuries of exploring the stars and interacting with other spacefaring races... a new material was discovered. One that was so worldchanging, it was like TNs were to your conventional race.
The hell would you call them? SuperNewtonian? SubNewtonian? PostNewtonian?