amygdaloidal

adjective

amyg·​da·​loi·​dal ə-ˌmig-də-ˈlȯi-dᵊl How to pronounce amygdaloidal (audio)
: of, being, or containing small cavities in igneous rock that are filled with deposits of different minerals (such as chalcedony)
amygdaloid noun

Word History

First Known Use

1797, in the meaning defined above

Time Traveler
The first known use of amygdaloidal was in 1797

Dictionary Entries Near amygdaloidal

Cite this Entry

“Amygdaloidal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amygdaloidal. Accessed 14 Jun. 2024.

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