/ep'i kyoo ree"euh niz'euhm, -kyoor"ee-/ , n.
1. the philosophical system or doctrine of Epicurus, holding that the external world is a series of fortuitous combinations of atoms and that the highest good is pleasure, interpreted as freedom from disturbance or pain.
2. ( l.c. ) epicurean indulgence or habits.
Also, Epicurism /ep"i kyoo riz'euhm, ep'i kyoor"iz euhm/ .
[ 1745-55; EPICUREAN + -ISM ]