appurtenance
ap·pur·te·nance
noun
1.
a supplementary component that improves capability
Origin
From Middle English appurtenaunce, from Anglo-Norman apurtenance and Old French apartenance, from apartenir, from Latin appertineō (“to belong, to appertain”). More at appertain. By surface analysis, appertain + -ance.
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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.