Definify.com
Webster 1913 Edition
Supplementary
{ 
Supˊple-men′tal
,Supˊple-men′ta-ry
, }Adj.
 [Cf. F. 
supplémentaire
.] Added to supply what is wanted; additional; being, or serving as, a supplement; 
as, a 
. supplemental 
law; a supplementary 
sheet or volumeSupplemental air 
(Physiol.)
, the air which in addition to the residual air remains in the lungs after ordinary expiration, but which, unlike the residual air, can be expelled; reserve air. 
– Supplemental bill 
(Equity)
, a bill filed in aid of an original bill to supply some deffect in the latter, or to set forth new facts which can not be done by amendment. 
Burrill. 
Daniel. 
– Supplementary chords 
(Math.)
, in an ellipse or hyperbola, any two chords drawn through the extremities of a diameter, and intersecting on the curve.
 Definition 2025
supplementary
supplementary
English
Adjective
supplementary (comparative more supplementary, superlative most supplementary)
- Additional; added to supply what is wanted.
 
Related terms
Translations
additional
  | 
  | 
Noun
supplementary (plural supplementaries)
- Something additional; an extra.
 
References
- “supplementary” in An American Dictionary of the English Language, by Noah Webster, 1828.