
Multiword Results
atomic theory 
any of several theories concerning the structure, properties, or behavior of atoms. [2 definitions] 
big bang theory 
the theory that the universe originated at a fixed point billions of years ago in a cosmic explosion of a mass of hydrogen atoms, and that it has been expanding ever since. (Cf. steady state theory.) 
Darwinian theory 
Charles Darwin's theory that plants and animals evolved from early primitive life forms with variation caused by natural selection and survival of the fittest. (See evolution.) 
domino theory 
a theory that if one event occurs, such as the fall of one country under Communist control, a chain of related events will be triggered thereby, such as the fall of neighboring countries. 
field theory 
in physics, a mathematical description of the effects of physical fields on the distribution and behavior of matter. 
game theory 
mathematical analysis of strategies for maximizing gains and minimizing losses, applied to games of strategic competition and to corporate, military, and other decisionmaking problems. 
kinetic theory 
in physics, the theory that the particles of all matter are in constant motion and that temperature is dependent on the speed of such motion. 
quantum theory 
a theory in physics that energy radiates or is absorbed in discontinuous quantities, each a multiple of indivisible units or quanta. 
set theory 
the study of the mathematical properties of, and relations between, sets. 
steady state theory 
the cosmologic theory, no longer in favor, that new matter is continuously created, causing the universe to expand without requiring cycles of explosion and contraction. (Cf. big bang theory.) 
theory of games 
see "game theory." 

