American English

Definition of esoteric adjective from the Oxford Advanced American Dictionary

 

esoteric

 adjective
adjective
NAmE//ˌɛsəˈtɛrɪk//
 
(formal)
 
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likely to be understood or enjoyed by only a few people with a special knowledge or interest a program of music for everyone, even those with the most esoteric taste Specialist dictionaries may be required to understand some of the more esoteric texts.
See the Oxford Advanced Learner's Dictionary entry: esoteric