A donor is a person who donates something of value to a person or an organization, especially a charity. A wealthy donor might leave her book collection to the local library in her will.

Buildings on college campuses are frequently named after generous donors — if you give millions of dollars to your school, they might name the new library after you, crediting you as a donor. Another kind of donor gives blood that can be used for transfusions, or agrees to donate organs after his or her death. Donor comes from the Latin root donare, "give as a gift."

Definitions of donor
  1. noun
    a person who makes a gift of property
    synonyms: bestower, conferrer, giver, presenter
    see moresee less
    show 8 types...
    hide 8 types...
    one who gives up or relinquishes or renounces something
    a person who gives alms
    Indian giver
    an offensive term for someone who asks you to return a present he has given you
    altruist, philanthropist
    someone who makes charitable donations intended to increase human well-being
    settlor, trustor
    (law) a person who creates a trust by giving real or personal property in trust to a trustee for the benefit of a beneficiary; a person who gives such property is said to settle it on the trustee
    contributor, subscriber
    someone who contributes (or promises to contribute) a sum of money
    subsidiser, subsidizer
    someone who assists or supports by giving a subsidy
    a person who leaves a tip
    type of:
    benefactor, helper
    a person who helps people or institutions (especially with financial help)
  2. noun
    (medicine) someone who gives blood or tissue or an organ to be used in another person (the host)
    see moresee less
    blood donor
    someone who gives blood to be used for transfusions
    organ donor
    someone from whom an organ is taken for transplantation
    universal donor
    a person whose type O Rh-negative blood may be safely transfused into persons with other blood types
    type of:
    benefactor, helper
    a person who helps people or institutions (especially with financial help)
Word Family

Test prep from the experts

Boost your test score with programs developed by’s experts.

  • Proven methods: Learn faster, remember longer with our scientific approach.
  • Personalized plan: We customize your experience to maximize your learning.
  • Strategic studying: Focus on the words that are most crucial for success.


  • Number of words: 500+
  • Duration: 8 weeks or less
  • Time: 1 hour / week


  • Number of words: 500+
  • Duration: 10 weeks or less
  • Time: 1 hour / week


  • Number of words: 700+
  • Duration: 10 weeks
  • Time: 1 hour / week