supplemental
US /ˌsʌp.ləˈmen.t̬əl/
UK /ˌsʌp.ləˈmen.t̬əl/
1.
bù
provided in addition to what is already present or available to complete or enhance it.
:
•
many premature infants need supplemental oxygen soon after birth
bù
provided in addition to what is already present or available to complete or enhance it.