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Definition of postmark

postmark

/ˈpoʊstˌmɑːrk/
post · mark
Plural:postmarks
•
Past Simple:postmarked
•
Past Participle:postmarked
•
Present Participle:postmarking
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postmark Lexical Profile

postmark Game Scores & Validity

• noun

1

An official mark stamped on a letter or package by the postal service, indicating the place, date, and time of mailing or receipt, and serving to cancel the postage stamp.

Example

"The tax return was accepted on time because the envelope bore an official April 15 postmark."

Synonyms
View all synonyms for postmark

• verb

1

To stamp a letter or parcel with an official postal mark indicating the date and location of mailing.

Example

"All scholarship applications must be postmarked no later than the final day of the month."

Synonyms
View all synonyms for postmark

• Nearby Words

postlaunch
postman
postmarital
postmark
postmaster
postmenopause
postmodern

Word Origin & Etymology

Coined in the late 17th century by English Postmaster General Henry Bishop, who introduced an official stamped mark on letters to record the date they were received and prevent postal carriers from delaying deliveries.

Cite this Entry

Wordmom. (2026). Definition of Postmark. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/postmark
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