peridot

From Middle English peritot, from Anglo-Norman peridou, peridout, Middle French perido, peridon, of uncertain origin; later reborrowed from modern French péridot.

• (Received Pronunciation) IPA^(key): /ˈpɛɹ.ɪ.dɒt/, /ˈpɛɹ.ɪ.dəʊ/
• (General American) IPA^(key): /ˈpɛɹ.ɪ.dɑt/, /ˈpɛɹ.ɪ.doʊ/

• Audio (US):

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peridot (countable and uncountable, plural peridots)

1. A transparent olive green form of olivine, used as a gem.
   • 2004, Richard Fortey, The Earth, Folio Society, published 2011, page 51:

     Gem-quality olivine is known as peridot, which has a subtle green light all its own.

   • 2012 March, Lee A. Groat, “Gemstones”, in American Scientist‎^[1], volume 100, number 2, archived from the original on 14 June 2012, page 128:

     Although there are dozens of different types of gems, among the best known and most important are  […] . (Common gem materials not addressed in this article include amber, amethyst, chalcedony, garnet, lazurite, malachite, opals, peridot, rhodonite, spinel, tourmaline, turquoise and zircon.)

2. A yellow-green color, like that of the peridot.

   peridot:  

• David Barthelmy (1997–2025) “Peridot”, in Webmineral Mineralogy Database.
• “peridot”, in Mindat.org‎^[2], Hudson Institute of Mineralogy, 2000–2025.

• diopter, dioptre, periodt, proetid, proteid, protide, pterido-, pteroid, reptoid

Borrowed from French péridot.

• IPA^(key): /pe.riˈdot/

peridot n (plural peridote)

1. peridot

• “peridot”, in DEX online—Dicționare ale limbii române (Dictionaries of the Romanian language) (in Romanian), 2004–2025