• Webster's Revised Unabridged Dictionary
    • n Granulite (Geol) A whitish, granular rock, consisting of feldspar and quartz intimately mixed; -- sometimes called whitestone, and leptynite.
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Century Dictionary and Cyclopedia
    • n granulite A rock often having a parallel or foliated structure like that of gneiss, and consisting mainly of quartz and feldspar, together with red garnets, which are usually of very diminutive size. The feldspar appears to be a mixture of orthoclase and oligoclase, the latter more generally predominating. Granulite is a rock of especial importance in Saxony. It is nearly the equivalent of the French eurite, and is sometimes called in German Weissstein. See granite
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Chambers's Twentieth Century Dictionary
    • n Granulite a schistose but sometimes massive aggregate of quartz and orthoclase with garnets
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Webster's Revised Unabridged Dictionary
From Granule
Chambers's Twentieth Century Dictionary
L. granulum, dim. of granum, grain.


In literature:

The rock was of garnet gneiss, traversed by black dykes of pyroxene granulite.
"The Home of the Blizzard" by Douglas Mawson
They consist chiefly of granulitic quartzose schists and felspathic gneisses, permeated in places by strings and veins of pegmatite.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4" by Various
Several patches of granite and granulite fringe the western coast, the largest of these is a hornblende granite round Rocquaine Bay.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7" by Various
The felspar of the granulites is mostly orthoclase or cryptoperthite; microcline, oligoclase and albite are also common.
"Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3" by Various