adjective Also a·myg·da·loi·dal.
Examples from the Web for amygdaloid
They are composed of clay mixed with gravel, and covered with a wall of amygdaloid.Diplomatic Days|Edith O'Shaughnessy
Masses of the two former minerals were also found imbedded in amygdaloid and trap-rock, thus denoting the parent beds of rock.
It is found in connection with isolated blocks of amygdaloid, of primitive greenstone, and of petrosilex.
I have never yet seen a rock in which this earth was so abundant as in the amygdaloid of Scuir More.The Cruise of the Betsey|Hugh Miller
Vesicular lava and amygdaloid are the chief ingredients of some of the best parts of Australia Felix.