postmark
noun
an official mark stamped on letters and other mail, serving as a cancellation of the postage stamp and indicating the place, date, and sometimes time of sending or receipt.
postmarks
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pluralof postmark.plural
The grammatical form denoting more than one person, place, thing, or idea.
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present tense formof postmark (3rd person singular).present tense
Used to describe things happening now or regularly.
postmarknounan official mark stamped on letters and other mail, serving as a cancellation of the postage stamp and indicating the place, date, and sometimes time of sending or receipt.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In Garfield County, in southeastern Washington, 19 ballots — nearly 1 in 10 cast — had late postmarks this year.
From Salon ● Oct. 24, 2026
But a lifelong interest in stamps and postmarks seem to have led to him taking letters that caught his eye.
From BBC ● Mar. 25, 2025
States set their own election laws, and most rely on postmarks to determine if a vote was cast in time.
From Seattle Times ● May 21, 2024
Its postmarks can legally serve as documentation of when an item was mailed, whether a postcard or a ballot.
From Los Angeles Times ● Sep. 29, 2021
Weeks passed at Mrs. Sen’s before he found a blue aerogram, grainy to the touch, crammed with stamps showing a bald man at a spinning wheel, and blackened by postmarks.
From "Interpreter of Maladies" by Jhumpa Lahiri
