• IPA: /ˈsʌpləmənt/

supplement (plural supplements)

1. Something added, especially to make up for a deficiency.
2. An extension to a document or publication that adds information, corrects errors or brings up to date.
3. An additional section of a newspaper devoted to a specific subject.
   • 1907, Robert William Chambers, chapter IV, in The Younger Set, New York, N.Y.: D. Appleton & Company, OCLC 24962326 ↗:

     "Mid-Lent, and the Enemy grins," remarked Selwyn as he started for church with Nina and the children. Austin, knee-deep in a dozen Sunday supplements, refused to stir; poor little Eileen was now convalescent from grippe, but still unsteady on her legs; her maid had taken the grippe, and now moaned all day: "Mon dieu! Mon dieu! Che fais mourir!"

4. (geometry) An angle that, when added to a given angle, makes 180°; a supplementary angle.
5. (nutrition, bodybuilding) A vitamin, herbal extract or chemical compound ingested to meet dietary deficiencies or enhance muscular development.

• (something added) addition, supplement; See also Thesaurus:adjunct

• Portuguese: suplemento, adendo

• German: (generally) Nachtrag; (appendix) Anhang; (additional volume of an already completed opus) Supplement, Supplementband
• Portuguese: suplemento, adendo
• Russian: приложе́ние
• Spanish: suplemento

• French: supplément
• Portuguese: suplemento
• Russian: приложе́ние

• Portuguese: suplemento
• Russian: дополни́тельный у́гол
• Spanish: suplementario

• Portuguese: suplemento
• Russian: дополне́ние

supplement (supplements, present participle supplementing; past and past participle supplemented)

1. To provide or make a supplement to something.

• eke out

• Portuguese: suplementar
• Russian: дополня́ть
• Spanish: complementar