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ba·sil·i·ca (bə-sili-kə)
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n.
1.
a. A public building of ancient Rome having a central nave with an apse at one or both ends and two side aisles formed by rows of columns, which was used as a courtroom or assembly hall.
b. A Christian church building of a similar design, having a nave with a semicircular apse, two or four side aisles, a narthex, and a clerestory.
2. Roman Catholic Church A church that has been accorded certain privileges by the pope.

[Latin, fromGreekbasilike, from feminine ofbasilikos, royal, frombasileus, king.]

ba·sili·can(-kən)adj.
(click for a larger image)
basilica
plan of the 4th-century ad
St. Peter's Basilica, Rome, Italy
A. apse
B. transept
C. nave
D. aisles
E. narthex
F. atrium

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 

Indo-European & Semitic Roots Appendices

    Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

    Indo-European Roots

    Semitic Roots

    The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.