Simple Definition of mason jar

from our Learner's Dictionary

mason jar

noun

variants or Mason jar
ˈmeɪsn̩- How to pronounce mason jar (audio)
plural mason jars
US : a glass jar that has a wide opening and that is usually used in preserving fruits or vegetables

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“Mason jar.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/mason%20jar. Accessed 14 Apr. 2026.

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