Containing small particles of sand or resembling fine sand in texture.
From Latin 'arenula' (fine sand or small grains) with the suffix '-ous'. This is a diminutive form of 'arena', suggesting smaller or finer sandy particles than 'arenous'.
This is a rarer, more precise word that scientists use when they need to describe something with tiny sand-like grains—it's the difference between saying 'sandy' and 'has microscopic sand particles.'
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