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.
But only a select few stars become supernovae. Many stars cool in later life to end their days as white dwarfs and, later, black dwarfs. Star Fusion. But massive stars, many times larger than our own sun, may create a supernova when their core's fusion process runs out of fuel.hese blasts produce much of the material in the universeâincluding some elements, like iron, which make up our planet and even ourselves. Heavy elements are only produced in supernovae, so all of us carry the remnants of these distant explosions within our own bodies.