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  • Mason jar
    Mason jar
    noun
    a glass jar with a wide mouth and an airtight screw top, much used in home canning.
  • mason jar
    mason jar
    noun
    an airtight glass jar for preserving food

Mason jar

American  

noun

  1. a glass jar with a wide mouth and an airtight screw top, much used in home canning.


mason jar British  

noun

  1. an airtight glass jar for preserving food

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of Mason jar

1880–85, named after John L. Mason, 19th-century American who patented it in 1858


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.

See Examples For:

He’d been rooting around dusty barns at an agricultural estate sale and found pristine packs of Chiclets and Life Savers inside a sealed Mason jar, including one unopened Choc-O-Mint.

From The Wall Street Journal ● Jun. 4, 2026

Place the fine-cut chard stems in a Mason jar or other heatproof narrow container.

From Seattle Times ● Feb. 9, 2024

Conversely, the "Mason jar" method involves snipping the bottoms of your herb stems, storing the herbs upright in a jar with about an inch of fresh, cool water, and then sealing completely before refrigerating.

From Salon ● Jul. 18, 2023

And she shows up with this Mason jar.

From Los Angeles Times ● May 12, 2023

I said, dropping Petey and his twig into the biggest Mason jar we had, quart-size, with holes punched in the lid.

From "The Evolution of Calpurnia Tate" by Jacqueline Kelly

This method is a fun one: Treat them, literally, like flowers by propping them up in a mason jar, vase or glass with their stems or ends slightly trimmed.

From Salon ● Jul. 18, 2023

Early in the event, people began to huddle near a table decorated with wildflowers in a mason jar and a yellow legal pad.

From Los Angeles Times ● Jun. 21, 2023

The sauce can be made and refrigerated in a glass mason jar up to one week in advance.

From Washington Times ● May 28, 2023

Place a spent, split vanilla pod into a heat-resistant glass mason jar.

From Salon ● Apr. 19, 2022

“That’s what I think,” I answered, swishing suds in and out of the umpteenth mason jar that would probably collect another year’s worth of dust before there’d be any fruit fit for canning.

From "Moon Over Manifest" by Clare Vanderpool

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