Definition of demantoid in English:

demantoid

Syllabification: de·man·toid
Pronunciation: /diˈmantoid
 
/

noun

  • A lustrous green variety of andradite (garnet).
    More example sentences
    • The main uses of garnets are for abrasives and grinding materials; they also provide semi-precious gemstones such as rhodolite, demantoid, and grossular.
    • The dragonflies' backs are composed of graduated black opals and the heads are of pink opals with demantoid garnet eyes.
    • The third major find in recent years is green andradite, some of which may be considered demantoid.

Origin

late 19th century: from German, from Demant 'diamond'.

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Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody