n.
- a thing added to something else to enhance or complete it.
- a separate section, especially a colour magazine, added to a newspaper or periodical.
- an additional charge payable for an extra service or facility.
- Geometry the amount by which a given angle is less than 180°.
v.
provide a supplement for.
Derivative
- supplemental adj.
- supplementally adv.
- supplementation n.
Etymology
ME: from L. supplementum, from supplere (see supply1).