What does the term genetic engineering refer to?

From the Web site of safe-food.org, genetic engineering is "a laboratory technique used by scientists to change the DNA of living organisms." Put another way, genetic engineering is "the alteration of genetic code using artificial means" (from www.globalchange.com). Genetic engineering is also called bio-engineering, gene-splicing, gene manipulation, etc. and the organisms that result from the practice are called genetically modified organisms (GMOs).