Meaning: Use up, consume fully. Classified under: Verbs of eating and drinking. Synonyms: expend; use. Context example: The legislature expended its time on school questions Expend entails doing...: consume; deplete; eat; eat up; exhaust; run through; use up; wipe out (use up (resources or materials)) Troponyms (each of the following is one way to expend):
Supernova nucleosynthesis. Supernova nucleosynthesis is a theory of the production of many different chemical elements in supernova explosions, first advanced by Fred Hoyle in 1954. The nucleosynthesis, or fusion of lighter elements into heavier ones, occurs during explosive oxygen burning and silicon burning processes. Those fusion reactions create the elements silicon, sulfur, chlorine, argon, sodium, potassium, calcium, scandium, titanium and iron peak elements: vanadium, chromium, manganese, iron, cobalt, and nickel.
What Causes a Supernova. A Massive Star will use up all of its hydrogen, leaving nothing to fuel it. After a few years with no source of energy it will run out of energy. During this process the core of the Star turns to iron and the Star will become unstable. This causes the star to become a Red Supergiant. The Star will continue to become more and more unstable which will cause a nuclear reaction in the core causing the Star to go Supernova.