definitions of marketing

Here are some definitions of marketing, oldest first, starting with the 1922 OED (Oxford English Dictionary). The increasingly broad nature of these marketing definitions reflects the increasing dimensions by which organizations engage with their markets, and consequently how the meaning of marketing has grown.
"The action of selling, i.e., to bring or send to market..." and also, "Produce [verb meaning] to be sold in the market." (1922 OED - Oxford English Dictionary, paraphrased)
"The action or business of promoting and selling products and services, including market research and advertising". (1998-2005 revised, modern-day Oxford English Dictionary)
"Marketing is the management process responsible for identifying, anticipating and satisfying customer requirements profitably." (The UK Chartered Institute of Marketing, CIM, official definition 2012.)
"Marketing encompasses and includes all organizational activities which involve or affect the relationship between a supplier/provider organization and its audience and stakeholders." (Businessballs.com, A Chapman, 2012)