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Learn 504 Absolutely Essential Words

Lesson four

Chapter 1 | Lesson 4   Return to Lessons list

7   theory  

explanation based on thought, observation, or reasoning
A. Einstein's theory is really too difficult for the average person to understand.
B. My uncle has a theory about the effect of weather on baseball batters.
C. No one has advanced a convincing theory explaining the beginnings of writing.
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