An organism or creature that lives in or on trees.
From Latin arbor (tree) + -cola (inhabitant, from colere meaning to dwell or inhabit). The -cola suffix appears in words like 'agricola' (farmer) and gives us many ecological terms.
Scientists use '-cole' to name organisms by their habitat—a 'saxicole' lives on rocks, a 'rupicole' on cliffs—so if you understand this suffix, you can decode dozens of ecological terms you've never heard before.
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