Hypertext Webster Gateway: "magnesite"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Magnesite \Mag"ne*site\, n. [Cf. F. magn['e]site.] (Min.)
Native magnesium carbonate occurring in white compact or
granular masses, and also in rhombohedral crystals.
From WordNet (r) 1.7 (wn)
magnesite
n : a black magnetic mineral consisting of magnesium carbonate;
a source of magnesium
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