1
: one that gives, donates, or presents something
2
: one used as a source of biological material (such as blood or an organ)
3
a
: a compound capable of giving up a part (such as an atom, chemical group, or subatomic particle) for combination with an acceptor
b
: an impurity added to a semiconductor to increase the number of mobile electrons
Examples of donor in a Sentence
The money was raised from individual donors.
She is one of the charity's major donors.
Recent Examples on the Web
The $83 million purchase of four acres in Okaloosa County, bought from a donor at 10 times its original purchase price, looks like a taxpayer ripoff.
—
Letters To The Editor, The Orlando Sentinel, 23 Jan. 2026
More women in their late 30s and 40s aren’t just choosing to become first-time mothers—some of them are also entering motherhood on their own, through IVF or donor sperm.
—Akilah Siti Easter, Parents, 23 Jan. 2026
Oklahoma Voice is part of States Newsroom, a nonprofit news network supported by grants and a coalition of donors as a 501c(3) public charity.
—Nuria Martinez-Keel, Oklahoma Voice, 23 Jan. 2026
Canada has reaffirmed its role as a core immunization donor to Gavi as well, pledging US $500 M for the 2026–2030 strategic period.
—Sylvana Quader Sinha, Forbes.com, 23 Jan. 2026
See All Example Sentences for donor
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Letters To The Editor, The Orlando Sentinel, 23 Jan. 2026
More women in their late 30s and 40s aren’t just choosing to become first-time mothers—some of them are also entering motherhood on their own, through IVF or donor sperm.
—Akilah Siti Easter, Parents, 23 Jan. 2026
Oklahoma Voice is part of States Newsroom, a nonprofit news network supported by grants and a coalition of donors as a 501c(3) public charity.
—Nuria Martinez-Keel, Oklahoma Voice, 23 Jan. 2026
Canada has reaffirmed its role as a core immunization donor to Gavi as well, pledging US $500 M for the 2026–2030 strategic period.
—Sylvana Quader Sinha, Forbes.com, 23 Jan. 2026
See All Example Sentences for donor
Cite this Entry
“Donor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/donor. Accessed 28 Jan. 2026.
Copy CitationKids Definition
donor
noun
do·nor
ˈdō-nər 
-ˌnȯr
1
: one that donates
2
: one used as a source of bodily material or parts
a blood donor
a kidney donor
Medical Definition
Legal Definition
donor
noun
do·nor
ˈdō-nər, -ˌnȯr
: one that gives, donates, grants, or confers something
specifically
: settlor
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