Origin: Latin suffix -tion
Supplementation has 3 different meanings across 1 category:
a quantity added (e.g. to make up for a deficiency)
"The doctor recommended calcium supplementation because his blood tests showed a significant deficiency in bone density."
the act of supplementing
"After reading the doctor's advice, she started taking a daily vitamin regimen as supplementation to her balanced diet."
The act of supplementing
"After her doctor advised it, she began taking a daily vitamin to ensure proper supplementation for her bone health."