em·er·ald (ĕmər-əld, ĕmrəld)
1. A brilliant green to grass-green transparent variety of beryl, used as a gemstone.
2. A strong yellowish green.
Of a strong yellowish green.
[Middle English emeraude, from Old French, from Medieval Latin esmeralda, esmeraldus, from Latin smaragdus, from Greek smaragdos; akin to Sanskrit marakatam, probably of Semitic origin; akin to Akkadian barraqtu and Hebrew bāreqet, a kind of gemstone (probably emerald); see brq in the Appendix of Semitic roots.]
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