Relating to or resembling an arche; fundamental or primordial in nature.
From Greek 'arche' plus the English suffix '-al.' A rare philosophical adjective used in 19th and 20th-century discussions of ancient Greek philosophy and cosmology.
This adjective is almost never used anymore, but when philosophers discuss the pre-Socratic thinkers, it's the perfect word for describing ideas about the 'primordial stuff' that everything comes from.
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