Ultrahard

adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Extremely hard; of utmost hardness.
  2. 2
    harder than diamond, harder than 150GPa resistance not-comparable

Etymology

From ultra- + hard.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.