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.
Definition of 'Trade Union' Definition: Labour unions or trade unions are organizations formed by workers from related fields that work for the common interest of its members. They help workers in issues like fairness of pay, good working environment, hours of work and benefits.