hyperdiamond /haɪpəˈdaɪ.(ə.)mənd/ noun2 •A material that has superior durability and density to regular diamonds; an aggregated diamond nanorod.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..." — 1998 •Synonym of 24-cell. formshyperdiamonds