To understand what implied volatility (IV) is, you must first understand what volatility is. Volatility measures the amount that something changes (or in more fancy jargon, it measures the magnitude of change). For example...the price of gas is volatile.
Labor Organization Definition: A defined group of employees formed for the purposes of representing those employees with the employer as to the terms of a collective contract of employment. Related Terms: Union, Trade Union, Labor Union, Collective Bargaining, Disclaimer of Interest.
trade union - an organization of employees formed to bargain with the employer; you have to join the union in order to get a job. labor union, trades union, union, brotherhood. organization, organisation - a group of people who work together. industrial union, vertical union - a labor union that admits all workers in a given industry irrespective of their craft. craft union - a labor union whose membership is restricted to workers in a particular craft.