Answer:
refining the term.
Explanation:
In the 17th chapter of "Of the Wisdom of the Ancients", Bacon discusses love, it's reason for being and where it comes from. You can understand the theme when you read the name of the chapter: "Cupid or Atom". Francis Bacon is actually refining the definition of love considering the things that he knows based on the most recent discoveries of his time.
Its the word vivacious, wich means full of life.
I'm fairly certain that it's an abstract noun. My apologies if that is not correct.