supplemental
supp·le·men·tal
adjective
1.
functioning in a subsidiary or supporting capacity
- “the main library and its auxiliary branches”
2.
added to complete or make up a deficiency
- “produced supplementary volumes”
- “additional reading”
Origin
From supplement + -al.
Phrases
- supplemental jurisdiction
- supplemental restraint system
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.