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Amygdaloid

AMYG'DALOID, n. [Gr. an almond, and form;]
Toad-stone; a compound rock, consisting of a basis of basalt, greenstone or some other variety of trap, imbedding nodules of various minerals, particularly calcarious spar, quartz, agate, zeolite, chlorite, etc. When the imbedded minerals are detached, it is porous, like lava.
amygdaloid appears in definitions for these words:
Amygdaloidal Mandlestone Toad-stone Trap Trap-tuff

 

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