early adopter

noun

a person who uses a new product or technology before it becomes widely known or used.

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British Dictionary definitions for early adopter

early adopter

noun

one of the first people or organizations to make use of a new technology

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012