1. (

• addendum ,
• supplement ,
• postscript ,

) textual matter that is added onto a publication; usually at the end ;

2. (

• supplement ,
• supplementation

) a quantity added (e.g. to make up for a deficiency) ;

3. (

• accessory ,
• appurtenance ,
• supplement ,
• add-on ,

) a supplementary component that improves capability ;

1. (

• supplement

) add as a supplement to what seems insufficient; "supplement your diet" ;

2. (

• supplement

) serve as a supplement to; "Vitamins supplemented his meager diet" ;

3. (

• append ,
• add_on ,
• supplement ,
• affix ,

) add to the very end; "He appended a glossary to his novel where he used an invented language" ;