geode
noun
ge·ode ˈjē-ˌōd 
1
: a nodule of stone having a cavity lined with crystals or mineral matter
2
: the cavity in a geode
Example Sentences
Recent Examples on the Web To finish, a light trace of gold or metallic details along the main bands elevates the look and gives it that classic geode finish. 
Lottie Winter, Glamour, 11 Feb. 2022 Thank you for this astute reading of the different strategies in geode. Daniel Drake, The New York Review of Books, 13 Nov. 2021 The giant geode’s hollow core was formed by large gas bubbles in the magma that poured out from fractures in the Earth’s crust about 135 million years ago. Edward Rothstein, WSJ, 1 Sep. 2021 Keep that red wine fresh with these cute, handmade geode stoppers. Kelly Allen, House Beautiful, 23 Mar. 2021 The science part comes in when a child holds a geode in his or her hand and starts wondering how it was formed. Outdoor Life, 23 Nov. 2020 Some geode kits contain a large assortment of geodes. Outdoor Life, 23 Nov. 2020 Inside her bag was a notebook, a day planner, a lot of heart stickers, a jumble of colored pens, one very bright flashlight, index cards, a small box of tea, and a geode. Jackie Frere, Redbook, 10 Apr. 2018 Dynasty Electrik’s tranquil crystal sound bath on Friday evenings is a sonic, restorative journey past amethyst, citrine geodes and crystal quartz clusters led by gem gallery owners Seth Misterka and Jenny Deveau. oregonlive, 26 Apr. 2020 See More
Lottie Winter, Glamour, 11 Feb. 2022 Thank you for this astute reading of the different strategies in geode. Daniel Drake, The New York Review of Books, 13 Nov. 2021 The giant geode’s hollow core was formed by large gas bubbles in the magma that poured out from fractures in the Earth’s crust about 135 million years ago. Edward Rothstein, WSJ, 1 Sep. 2021 Keep that red wine fresh with these cute, handmade geode stoppers. Kelly Allen, House Beautiful, 23 Mar. 2021 The science part comes in when a child holds a geode in his or her hand and starts wondering how it was formed. Outdoor Life, 23 Nov. 2020 Some geode kits contain a large assortment of geodes. Outdoor Life, 23 Nov. 2020 Inside her bag was a notebook, a day planner, a lot of heart stickers, a jumble of colored pens, one very bright flashlight, index cards, a small box of tea, and a geode. Jackie Frere, Redbook, 10 Apr. 2018 Dynasty Electrik’s tranquil crystal sound bath on Friday evenings is a sonic, restorative journey past amethyst, citrine geodes and crystal quartz clusters led by gem gallery owners Seth Misterka and Jenny Deveau. oregonlive, 26 Apr. 2020 See More Word History
Etymology
Latin geodes, a gem, from Greek geōdēs earthlike, from gē earth
First Known Use
circa 1732, in the meaning defined at sense 1
Kids Definition
geode
noun
ge·ode ˈjē-ˌōd
: a stone with a hollow space inside lined with crystals or mineral matter
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