What does supplementation mean?
Supplementation is the practice of adding something to a diet, treatment, or system to improve or support it. The added substance may be a vitamin, mineral, medicine, nutritional product, or other beneficial material, and the term is especially common in medical, nutritional, and sports contexts. “Dietary supplementation” refers generally to adding extra nutrients, while “vitamin supplementation” and “iron supplementation” name more specific examples. The word usually suggests supplementation of an existing diet or regimen rather than replacing it altogether. In medical contexts, supplementation can address a genuine deficiency or support a recommended treatment, but its benefits depend on the substance involved and the individual circumstances. The term is also used more broadly for adding resources or material to strengthen an organization, system, or process.
The act or process of supplying something additional to improve, reinforce, or make complete an existing diet, treatment, or system.
"Supplementation with iron helped correct her deficiency."
Common in medical, nutritional, and scientific contexts.
Something added to supplement an existing diet, treatment, or system.
"The supplement was intended as a useful addition to the children's diet."
This sense is less common than the process or practice of supplementing, and is often used in technical or informational contexts.
The plural is uncommon because supplementation usually refers to an uncountable practice or process.
"The study compared different forms of supplementation."
Supplementation is the deliberate addition of something useful, but it cannot replace a balanced diet or effective medical treatment on its own.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does supplementation come from?
Supplementation was formed in English by adding the suffix “-ation” to “supplement.” “Supplement” comes through Old French from the Latin supplementum, meaning “something added” or “an addition,” ultimately from supplere, “to fill up” or “supply what is lacking.” The related English forms “supplemental” and “supplementary” preserve the same Latin root.
Related word forms
How supplementation is actually used
The word is especially common in medical, nutritional, and scientific contexts. It often implies adding a concentrated nutrient, medicine, or treatment to an existing diet or regimen rather than replacing it.