Relating to or resembling a basin; cup-shaped or having the characteristics or form of a basin.
From basin (Old French bacin, from Latin bacca, container) plus '-al' suffix (relating to). This is a geological and anatomical descriptor.
Geologists use 'basinal' to describe ancient seafloor depressions—rocks from basinal environments tell stories of lost oceans and can contain valuable fossils and mineral deposits.
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