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A dense, homogeneous rock with constituents so fine that they cannot be seen by the naked eye.
[From Greek aphanēs, unseen : a-, not; see a-1 + phainesthai, phan-, to appear, passive of phainein, to show; see phenomenon.]
aph′a·nit′ic (-nĭt′ĭk) adj.
(Geological Science) any fine-grained rock, such as a basalt, containing minerals that cannot be distinguished with the naked eye
[C19: from Greek aphanēs invisible]
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|Noun||1.||aphanite - fine-grained homogeneous rock (such as basalt) containing minerals undetectable by the naked eye|