[n] the 19th letter of the Roman alphabet
[n] a unit of conductance equal to the reciprocal of an ohm
[n] the cardinal compass point that is at 180 degrees
[n] 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)
[n] 1/60 of a minute; the basic unit of time adopted under the System International d'Unites