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medaka

[mi-dak-uh]
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noun
  1. a small Japanese fish, Oryzias latipes, common in rice fields, often kept in aquariums.

Origin of medaka

1930–35; < Japanese, equivalent to me(y) (earlier *mai) eye + -daka, combining form of taka high
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018