the alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe | (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work |
| the 19th letter of the Roman alphabet |
| a unit of conductance equal to the reciprocal of an ohm |
| the cardinal compass point that is at 180 degrees |
| 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) |