"Any lateral division of any part of a church, whether nave, choir or transept. The number of aisles varies in the churches of different countries." — Chambers' Encyclopedia, 1875

Aisle

"Any lateral division of any part of a church, whether nave, choir or transept. The number of aisles…

"Plan of Amiens Cathedral. A, Apsidal aisle. B B, Outer aisles of choir. F G, Transepts. H, Central tower. I J, Western turrets. M, Principal or western doorway. N N, Western side doors. P Q, North and south aisles of choir. R R R, Chapels. T U, North and south aisles of nave." — Winston's Encyclopedia, 1919

Amiens Cathedral

"Plan of Amiens Cathedral. A, Apsidal aisle. B B, Outer aisles of choir. F G, Transepts. H, Central…

"The Basilica of Maxentius has great intersecting vaults, vaulted aisles and buttresses." — Chambers, 1881

Basilica of Maxentius

"The Basilica of Maxentius has great intersecting vaults, vaulted aisles and buttresses." — Chambers,…

"Plan of Wells Cathedral. A, Apse or apsis. B, Altar, altar-platform, and altar-steps. D E, Eastern or lesser transept. F G, Western or greater transept. H, Central towers. I J, Western towers. K, North porch. L, Library or register. M, Principal or western doorway. N N, Western side doors. O, Cloister yard or garth. P Q, North and south aisles of choir. R S, East and west aisles of transept. T U, North and south aisles of nave. R R, Chapels. V, Rood screen or organ loft. W, Altar of Lazy chapel." — Winston's Encyclopedia, 1919

Wells Cathedral

"Plan of Wells Cathedral. A, Apse or apsis. B, Altar, altar-platform, and altar-steps. D E, Eastern…