notion

definition: 
an idea; belief; or opinion
sentence: 
Others say this advice, which stems from the notion that eating saturated fat promotes heart disease, is not supported by scientific evidence.
difficulty: 
very easy
toefl frequency: 
2
toefl classification: 
adverb: 
adjective: 
adverb sentence: 
adjective sentence: 
verb: 
verb sentence: 
noun: 
notion
noun sentence: