A taxonomic group or organisms that are associated with or have an affinity for dinoflagellates.
From Greek 'dino-' (dinoflagellate) + 'philea' (from 'phile,' one who loves), meaning organisms attracted to or dependent on dinoflagellates.
Some organisms have literally evolved a 'love affair' with dinoflagellates—they depend on them so completely that if dinoflagellates disappeared, so would they!
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