(mineralogy) A weakly magnetic ferrous sulfide mineral, FeS.

Characteristic of the Greek philosopher Pyrrho

plural of Pyrrhonism

The system of skeptical philosophy established by Pyrrho of Elis, centred on the idea that nothing can be known for certain; widespread skepticism, universal doubt.

A follower of Pyrrho; a skeptic.

plural of Pyrrhonist

(organic chemistry) A particular carotenoid.

plural of pyrrhocorid

(entomology) Any member of the family Pyrrhocoridae.

Of or relating to Pyrrhonism.