superhard

English

Etymology

From super- +‎ hard.

Adjective

superhard (comparative more superhard, superlative most superhard)

1. Having a very high hardness.
2. Highly strengthened against attack.

   a superhard missile silo

3. (not comparable, mineralogy) Having a hardness between that of boron nitride and that of diamond.

Related terms

• ultrahard

Noun

superhard (plural superhards)

1. (motor racing) A tyre whose compound is harder than a normal hard tyre.