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spinaceous

[spi-ney-shuh s]
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adjective
  1. pertaining to or of the nature of spinach; belonging to the amaranth family of plants.

Origin of spinaceous

1815–25; < New Latin Spin(acia) spinach + -aceous
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018