(mineralogy) An orange red mineral containing arsenic, hydrogen, manganese, oxygen, and vanadium.

(biochemistry) Pertaining to hormones. / (colloquial) Of or pertaining to the menstrual cycle. / Strongly affected by one's hormones.

Of or pertaining to a volcano or volcanoes / Produced by a volcano, or, more generally, by igneous agencies / Changed or affected by the heat of a volcano.

A surname.