aphanite

English Thesaurus

1. fine-grained homogeneous rock (such as basalt) containing minerals undetectable by the naked eye (noun.substance)

hypernym	:	rock, stone,
definition	:	material consisting of the aggregate of minerals like those making up the Earth's crust (noun.substance)

derivation	:	aphanitic,
definition	:	of or relating to aphanite (adj.pert)

derivation	:	aphanitic,
definition	:	of or relating to aphanite (adj.pert)