moss agate

noun

Definition of moss agate

: an agate mineral containing brown, black, or green mosslike or dendritic markings

First Known Use of moss agate

1798, in the meaning defined above

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The first known use of moss agate was in 1798

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Cite this Entry

“Moss agate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/moss%20agate. Accessed 12 Aug. 2020.

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Britannica.com: Encyclopedia article about moss agate

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