SINCE 1828

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amygdaloidal

adjective amyg·da·loi·dal \ ə-ˌmig-də-ˈlȯi-dᵊl \

Definition of amygdaloidal

: of, being, or containing small cavities in igneous rock that are filled with deposits of different minerals (such as chalcedony)

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amygdaloid

play \ə-ˈmig-də-ˌlȯid\ noun

First Known Use of amygdaloidal

1797

in the meaning defined above

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