ses

1. n a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite) n the compass point midway between south and east; at 135 degrees n 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites 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 the cardinal compass point that is at 180 degrees n a unit of conductance equal to the reciprocal of an ohm n the 19th letter of the Roman alphabet n (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work Source: ecdict

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