BTW, my statement is correct whether we are talking about "defined" or "hundreds".
Definitions of evolution on the Web:
development: a process in which something passes by degrees to a different stage (especially a more advanced or mature stage); "the development of his ideas took many years"; "the evolution of Greek civilization"; "the slow development of her skill as a writer"
(biology) the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms
wordnet.princeton.edu/perl/webwn
In the life sciences, evolution is a change in the traits of living organisms over generations, including the emergence of new species. Since the development of modern genetics in the 1940s, evolution has been defined more specifically as a change in the frequency of alleles in a population from one generation to the next.In other fields evolution is used more generally to refer to any process of change over time.
en.wikipedia.org/wiki/Evolution
BTW, my statement is correct whether we are talking about "defined" or "hundreds".
You have already said that the universe may be in your head. Solipsism. so you may have your own definition of evolution. However the world of science does not operate in your head and accepts the following definition of evolution that science determined.
ev·o·lu·tion (v-lshn, v-)
n.
1. A continuing process of change from one state or condition to another or from one form to another. 2. The theory that groups of organisms change with passage of time, mainly as a result of natural selection, so that descendants differ morphologically and physiologically from their ancestors.
The American Heritage® Stedman's Medical Dictionary, 2nd Edition Copyright © 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.