verb (v)

• make a subtraction(verb.cognition)

  Example:
  Subtract this amount from my paycheck.
  

  Synonym:
  deduct, take off
  Antonym:
  add, add together
  

  source: wordnet30
• take off or away(verb.change)

  Example:
  This prefix was subtracted when the word was borrowed from French.
  

  source: wordnet30
• To withdraw, or take away, as a part from the whole; to deduct; as, subtract 5 from 9, and the remainder is 4.(verb)

  source: webster1913