Something that supplements or adds to. / A requisition or article of legislation that provides additional funding for a program.

(medicine) Any substance, such as a vitamin or mineral, taken as a supplement to food to replace nutrients that would otherwise be missing in a person's diet.

(geometry) An angle that, when added to another referenced angle, produces an angle of 180 degrees.

A charge added to a per-person occupancy rate that is based on an assumption of double occupancy, as on a cruise ship.

plural of single supplement

The act of supplementing / Something added as a supplement

simple past tense and past participle of supplement

plural of supplement

Third-person singular simple present indicative form of supplement

plural of supplemental