an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)

the cardinal compass point that is at 180 degrees

a unit of conductance equal to the reciprocal of an ohm

the 19th letter of the Roman alphabet

(thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work