n.
1.1/60 of a minute
2.an abundant tasteless odorless multivalent nonmetallic element
3.the cardinal compass point that is at 180 degrees
4.a unit of conductance equal to the reciprocal of an ohm
5.the 19th letter of the Roman alphabet
6.(thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work