Definition of telephoto lens noun from the Oxford Advanced American Dictionary

 

telephoto lens

 noun
noun
NAmE//ˌtɛləˌfoʊt̮oʊ ˈlɛnz//
 
 
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a camera lens that produces a large image of an object that is far away and allows you to take photographs of it
See the Oxford Advanced Learner's Dictionary entry: telephoto lens