hyperdiamond

• hyper-diamond

hyper- +‎ diamond

• IPA^(key): /haɪpəˈdaɪ.(ə.)mənd/

hyperdiamond (plural hyperdiamonds)

1. Synonym of 24-cell
2. A material that has superior durability and density to regular diamonds; an aggregated diamond nanorod.
   • 1998, Gardner R. Dozois, The Year's Best Science Fiction: Fifteenth Annual Collection‎, St. Martin's Press, →ISBN, page 221:

     Fighting his fatigue — it was a black slick lapping at his consciousness — Vargovic said: "I understand perfectly well. I have the samples of hyperdiamond, in my hands..."

   • 2010, Francis Charles Laird, The Second Book of General Ignorance‎, Faber, →ISBN, pages 7–8:

     In 2005 scientists at Bayreuth University in Germany created a new material by compressing pure carbon under extreme heat. It’s called hyperdiamond or aggregated diamond nanorods (ADNR) and, although it’s incredibly hard, it looks rather like asphalt or a glittery black pudding.

   • 2010 September 20, Dazzak, “Why Diamonds”, in reddit.com‎:

     There are harder substances than diamond - In 2005, physicists Natalia Dubrovinskaia and colleagues compressed carbon fullerene molecules and heating them at the same time to create a series of interconnected rods called Aggregated Diamond Nanorods (ADNRs or "hyperdiamond"). It's about 11% harder than a diamond.

   • 2019 February 26, starcraftre, “How strong is hyperdiamond compared to regular diamonds?”, in reddit.com‎:

     Technically, hyperdiamond (diamond nanorod, DNR) is regular diamond, it's just been arranged into an optimal lattice.