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amygdaloid

Amygdaloid is a 10 letter word which starts with the letter A and ends with the letter D for which we found 2 definitions.

Definition
(n.) A variety of trap or basaltic rock containing small cavities occupied wholly or in part by nodules or geodes of different minerals esp. agates quartz calcite and the zeolites. When the imbedded minerals are detached or removed by decomposition it is porous like lava.
(a.) Alt. of Amygdaloidal

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