noun. The ancient theory of Democritus, Epicurus, and Lucretius, according to which simple, minute, indivisible, and indestructible particles are the basic components of the entire universe.

noun. A theory according to which social institutions, values, and processes arise solely from the acts and interests of individuals, who thus constitute the only true subject of analysis.

noun. The metaphysical or the physical theory of atoms; atomic philosophy or atomic theory. See atomic.

noun. The state of existing as an atom or a unit, or of being composed of atoms or units; individualism.

noun. The doctrine of atoms. See Atomic philosophy, under atomic.

noun. The ancient Greek theory that all matter is composed of very small indestructible and indivisible particles.

noun. The doctrine that society arises from individuals and that larger structures are unimportant.

noun. (psychology) a theory that reduces all mental phenomena to simple elements (sensations and feelings) that form complex ideas by association

noun. (chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles

"So even Popperians who are fond of demarcating science from non-science, and from pseudo-science, leave room for a doctrine such as atomism which is non-scientific but not necessarily pseudo-scientific."

atomistic  

logical atomism  

scientific theory  theory  

criterium  expansionism  falconry  geomancy  gregariousness  

Aristotelianism  Berkeleianism  Bohr theory  Bradleianism  Cynicism  

atomic