Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A coarse-grained greenish rock consisting primarily of garnet and sodic pyroxene, and often including quartz, kyanite, and rutile.

from The Century Dictionary.

  • noun The name given by Haüy to a rock consisting of a crystalline-granular aggregate of omphacite (a granular, grass-green variety of pyroxene) with red garnet.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) A rock consisting of granular red garnet, light green smaragdite, and common hornblende; -- so called in reference to its beauty.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun geology A coarse-grained metamorphic rock, a mixture of pyroxene, quartz, and feldspar with inclusions of red garnet.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[French éclogite, from Greek eklogē, selection (because the minerals it contains are not usually found together); see eclogue.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek ἐκλογή (ekloge, "selection").

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