plural of hair-splitting

Exciting, astonishing, frightening, or horrifying.

Alternative form of hair-curling

Alternative form of hair-raising

having red hair

plural of head of hair

plural of hair space

A theorem postulating that all black hole solutions of the Einstein-Maxwell equations in general relativity can be completely characterized by only three externally observable classical parameters: mass, electric charge, and angular momentum.

(mineralogy) Clear quartz crystal containing coloured filaments caused by impurities. Particular kinds are sometimes known as Venus’s hair stone or Thetis’s hair stone.

Third-person singular simple present indicative form of split hairs