Akademik

supplemental
adjective
1. functioning in a supporting capacity (Freq. 1)
-

the main library and its auxiliary branches

Syn: ↑auxiliary, ↑subsidiary, ↑supplementary
Similar to: ↑secondary
Derivationally related forms: ↑supplement (for: ↑supplementary), ↑supplement, ↑subsidiary (for: ↑subsidiary), ↑subsidiarity (for: ↑subsidiary), ↑auxiliary (for: ↑auxiliary)
2. added to complete or make up a deficiency
-

produced supplementary volumes

Syn: ↑supplementary
Similar to: ↑additive
Derivationally related forms: ↑supplement, ↑supplement (for: ↑supplementary)

Useful english dictionary. 2012.