complement

Noun

• either of two parts that mutually complete each other

• one of a series of enzymes in the blood serum that are part of the immune response

• something added to complete or embellish or make perfect
  • a fine wine is a perfect complement to the dinner
    
  • wild rice was served as an accompaniment to the main dish
    

• number needed to make up a whole force
  • a full complement of workers
    

• a complete number or quantity
  • a full complement
    

• a word or phrase used to complete a grammatical construction

Verb

• make complete or perfect; supply what is wanting or form the complement to
  • I need some pepper to complement the sweet touch in the soup
    

Related words

• Synonyms: 
  accompaniment , full complement