Whereby
I saw the following sentence. "Nuclear fusion is a process whereby a chemical reaction binds two atoms together. " What does "whereby" mean? Is it the same as "where"?
whereby = by which way/ method
not standard would be "in which/ with which"
But there are few misused words here (mostly just scientific stuff)
1) chemical reaction: nuclear fusion is not a chemical reaction, it is a nuclear reaction.
2) binds - in the nuclear field, binding is referred to as nuclear binding energy (minimum energy required to disassemble the nucleus of an atom into its component parts). And in the chemical field, it is referred to the force responsible for binding atoms together or binding molecules together.
3) atoms - nuclear fusion makes heavier NUCLEUS (part of an atom) from two lighter NUCLEI.
The correct definition of nuclear fusion should be: "nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more different atomic nuclei and subatomic particles (neutrons or protons)" (from Wikipedia)
Edit: nucleus the singular form and nuclei is the plural form just for further clarification.
