Found 2 items, similar to aphanite.
English → English (WordNet) Definition: aphanite aphanite n : fine-grained homogeneous rock (such as basalt) containing minerals undetectable by the naked eye
English → English (gcide) Definition: Aphanite Aphanite \Aph"a*nite\, n. [Gr. ? invisible; 'a priv. + ? to appear.] (Min.) A very compact, dark-colored ?ock, consisting of hornblende, or pyroxene, and feldspar, but neither of them in perceptible grains. [1913 Webster]