Final answer:
An aisle is a longitudinal division of a basilica building, with basilica churches having three to five aisles, with the central one called the nave.
Explanation:
True. An aisle is indeed one of the longitudinal divisions of a basilica building. Basilica form churches typically have three or five aisles, with the central one known as the nave. The term 'aisle' refers to the side areas of a basilica that run parallel to the nave.
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