Cide - denoting a person or substance that kills
Ectomy - denoting surgical removal of a specified part of the body
Ism - a distinctive practice, system, or philosophy, typically a political ideology or an artistic movement
Logy - dull and heavy in motion or thought; sluggish.
<u>Explanation:</u>
We can infer the meaning of this quote by considering the context of the statement. For example, a few lines before this quote, we are told by Alexis de Tocqueville,
<em>"He who has set his heart exclusively on the pursuit of worldly welfare is always in a hurry, for </em><em>he has but a limited time at his disposal to reach, to grasp, and to enjoy it."</em>
Hence, what the quote means is that man (i.e Gatsby), has an insatiable desire to enjoy what life can offer with the fear of dying in mind; despite the good things he already has.
