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countable and uncountable, plural emeralds
Any of various green gemstones, especially a green transparent form of beryl, highly valued as a precious stone. quotations examples
Although there are dozens of different types of gems, among the best known and most important are diamond, ruby and sapphire, emerald and other gem forms of the mineral beryl, chrysoberyl, tanzanite, tsavorite, topaz and jade.
2012 March, Lee A. Groat, “Gemstones”, in American Scientist, volume 100, number 2, archived from the original on 14 June 2012, page 128
Emerald green, a colour. examples
(heraldry) Vert, when blazoning by precious stones. quotations examples
16. As the first. Crest, on a Mount Emerald, a Falcon rising Topaz.
1726, John Guillim, The Banner Display'd, page 504
Crest. On a Wreath, a demi Dragon, Emerald, armed and langued, Roby [...] Supporters. Two Dragons reguardant, Emerald, [...]
1754, John Lodge, The Peerage of Ireland; Or, a Genealogical History of the ..., page 212
Some of the lagoons, said to have subterranean outlets, have no visible ones; the inclosing island, in such cases, being a complete zone of emerald.
1847 March 30, Herman Melville, Omoo: A Narrative of Adventures in the South Seas; […], London: John Murray, […]
Any hummingbird in the genera Chlorostilbon and Elvira; and some in the genus Amazilia examples
(entomology) Any of various species of dragonfly of the family Corduliidae.
(dated, printing, UK) A size of type between nonpareil and minion, standardized as 6½-point. examples
comparative more emerald, superlative most emerald
Of a rich green colour. quotations examples
The insect-queen of eastern spring, / O'er emerald meadows of Kashmeer / Invites the young pursuer near, / And leads him on from flower to flower / A weary chase and wasted hour.
1813, Lord Byron, The Giaour
third-person singular simple present emeralds, present participle emeralding, simple past and past participle emeralded
(transitive, poetic) To ornament with, or as if with, emeralds; to make green. examples