Sŭp'plē-mĕnt'al or Sŭp'plē-mĕnt'a-ry, a.

a. [Fr. supplémentaire, It. supplementare.] Added to supply what is wanted; additional; as, a supplemental law.

Supplemental bill (Equity), a bill filed in addition to an original bill to supply some defect in the latter, which can not be remedied by amendment. Burrill. Daniell. — Supplementary chords, in an ellipse or hyperbola, any two chords drawn through the extremities of a diameter, and intersecting on the curve. Math. Dict.