Relating to, resembling, or having the characteristics of a cellar; resembling or containing cells or a cellular structure.
From cellarium (Latin for storeroom) combined with the adjectival suffix -ous. This is a rare literary or technical term that evolved to describe cellar-like properties.
This word is beautifully ambiguous—it can mean 'like a cellar' (dark, cool, underground) or 'like cells' (compartmentalized, structured), which shows how medieval Latin influenced both architecture and biology vocabulary.
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