Definition of "coder"

coder

noun
plural coders
1. A device that generates a code, often as a series of pulses.
2. A person who assigns codes or classifications.
  Quotations
  Others may be subjective ratings made by the coders who independently read the studies, such as sex stereotype of the job […]
  2007, Gerald J. Miller, Kaifeng Yang, Handbook of Research Methods in Public Administration, page 715
3. (computing) A programmer.