amygdaloid

English Thesaurus

1. volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits (noun.substance)

hypernym	:	volcanic rock,
definition	:	extrusive igneous rock solidified near or on the surface of the Earth (noun.substance)

2. shaped like an almond (adj.all)

similar	:	rounded,
definition	:	curving and somewhat round in shape rather than jagged (adj.all)