The formulation of general concepts from specific instances by abstracting common properties.(noun)
Inductive reasoning from detailed facts to general principles.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "generalisation" in a sentence
"Suppose I said that I loved the people in India, I should not mean by that that I had any feeling about any individual soul of all those dusky millions, but only that I massed them all together; or made what people call a generalisation of them."
"And, on the other hand, the forming of a generalisation is the putting together in one class all those cases which present like relations; while the drawing a deduction is essentially the perception that a particular case belongs to a certain class of cases previously generalised."
""Nature," recalling your generalisation about the diadelphous structure, and now explaining the exception of Coronilla."