#dichromat  a person with any of the various forms of dichromacy
  supertype:  person__individual__someone__somebody__mortal__human__human_being__humanbeing__soul  a human being; "there was too much for one person to do"
  subtype:  uniocular_dichromat  a person who has normal vision in one eye and dichromacy in the other; very rare but very useful for experiments on color vision

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