Pounds : The pound or pound-mass (abbreviations: lb, lbm, lbm, â[1]) is a unit of mass with several definitions. Nowadays, the most common is the international avoirdupois pound which is legally defined as exactly 0.45359237 kilograms. A pound is equal to 16 ounces.
marginal marÂ·ginÂ·al (mÃ¤r'jÉ-nÉl) adj. Of, relating to, located at, or constituting a margin, a border, or an edge. Marginally within a lower standard or limit of quality. Relating to or located at the fringe of consciousness.
In an economy with money, the marginal utility of a quantity is simply that of the best good or service that it could purchase. In this way it is useful for explaining supply and demand, as well as essential aspects of models of imperfect competition.