Used or held in reserve
The definition of supplementary is something that is added on, or that completes something.
Designating or of any of the noncombat ships, as tankers or tenders, that form the service fleet of a navy
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(Physics) Of or relating to the hypothesis that underlying properties of entities, especially subatomic particles, may manifest themselves in mutually exclusive forms at different times, depending on the conditions of the observation, and that any physical model that describes entities in terms of one form or the other will be incomplete.
Not inherent or essential; derived from something outside.
For use during emergencies:
Being, or having the nature of, a reserve or reserves
Possessing some quality, or having been subject to some operation (as substitution), in the second degree; as, a secondary salt, a secondary amine, etc. Compare primary.
Of, for, or functioning as a standby
Forming or serving as a complement
Find another word for supplemental. In this page you can discover 18 synonyms, antonyms, idiomatic expressions, and related words for supplemental, like: increase, complemental, supplementary, supplement, auxiliary, subsidiary, FY2000, derivative, supporting, complementary and backup.