Of, relating to, or living in trees; having tree-like qualities.
From Latin arbor (tree) plus the suffix -al (of or relating to). This is a more technical synonym for arboreal, following the same Latin root with different suffix choices.
Arboral and arboreal are basically the same word with different suffixes—you get -al versus -eal. This happens a lot in English when we're describing the same concept, giving us synonyms that scientists can use to distinguish subtle technical meanings or just vary their language.
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