n.
A self-taught person.
[From Greek autodidaktos, self-taught : auto-, auto- + didaktos, taught; see didactic.]
autodidactic au'to·di·dac'tic adj.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.