Relating to, resembling, or containing arteries; having the characteristics or properties of an artery.
Derived from Latin 'arteria' meaning artery, with the adjectival suffix '-ous' added to create an adjective meaning 'of or relating to arteries.' This formation follows standard English word-building patterns.
While 'arterial' is the modern standard, 'arterious' is a historical variant that shows how medical terminology evolved—sometimes older word forms disappear not because they're wrong, but simply because newer versions catch on.
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