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Etymology

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Formed as nemat- +‎ -o- +‎ -gen, in zoölogical use after the French nématogène. Compare nematogenous and nematogenic, as well as the scientific Latin Nēmatogena.

Noun

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nematogen (plural nematogens)

  1. (zoology) One of the dimorphic forms of the species of Dicyema, which produce vermiform embryos; opposed to rhombogen.
  2. (chemistry) Any nematic mesogen.

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