Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun supplementation

2 senses of supplementation

Sense 1
supplement, supplementation -- (a quantity added (e.g. to make up for a deficiency))
       => increase, increment -- (the amount by which something increases; "they proposed an increase of 15 percent in the fare")

Sense 2
supplementation, subjunction, subjoining -- (the act of supplementing)
       => expansion, expanding upon -- (adding information or detail)