theory

a theory of education.

the theory of isostasy

kinetic theory of gases

kinetic theory of heat

kinetic theory of matter

to propound a theory

an atomic theory of heredity.

Darwin's theory of evolution.

the theory of equilibrium

the theory of two points

the theory of relativity

integrate theory with practice

combine theory with practice

maintain that the theory is wrong

correlate the theory with practice

the theory of knowledge

apply a theory to practice

The atomic theory is important.

incremental theory of plasticity

Scotland Yard, have you got a theory?

Have you any alternative theory which will meet the facts?

Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

But there's another far less likely theory.

Then they could make an informed theory.

So we have to discount that theory.

She and the team tested her theory.

There is a scientific theory for this.

Have you considered the water theory? - What?

Do they have any theories of why?