Relating to a formicarium; of or pertaining to artificial ant habitats or ant colony observation systems.
From 'formicarium' + '-ian' (relating to). Creates an adjective form describing things associated with or characteristic of formicaria.
This adjective is so specialized that most people have never heard it, but entomologists use it freely when discussing the tools and methods of ant observation—it's a perfect example of technical vocabulary that exists only within expert communities.
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