Definitions by MiSTER PiBB

egoist 

1. A believer in egoism
2. A self-centered or egocentric person

ayn rand was an egoist
that egotist is such an egoist

egoist by MiSTER PiBB January 2, 2010

egoism 

Psychological (descriptive):
the claim that each person is only interested in their own welfare
Ethical/rational (normative):
the belief that an ethical/rational decision is one that is in ones own self interest

if you believe in egoism, everyone is an egoist
that guys such a dick, i bet he believes in egoism

egoism by MiSTER PiBB January 2, 2010