Wikipedia/Evolutionism

Evolutionism refers to the biological concept of evolution, specifically to a widely held 19th century belief that organisms are intrinsically bound to improve themselves, and that changes are progressive and arise through inheritance of acquired characters, as in Lamarckism. The belief was extended to include cultural evolution and social evolution. The term is sometimes also used to refer to acceptance of the modern evolutionary synthesis, a scientific theory that describes how biological evolution occurs. In addition, the term is used in a broader sense to cover a world-view on a wide variety of topics, including chemical evolution as an alternative term for abiogenesis or for nucleosynthesis of chemical elements, galaxy formation and evolution, stellar evolution, spiritual evolution, technological evolution and universal evolution, which seeks to explain every aspect of the world in which we live.

In the modern scientific community, the term is considered an anachronism and  redundant since the overwhelming majority of scientists accept evolution, and so it is not used. To say someone is a scientist implies evolutionary views. In the creation-evolution controversy, creationists often call those who accept the validity of the modern evolutionary synthesis "evolutionists" and the theory itself as "evolutionism." Some creationists and creationist organizations, such as the Institute of Creation Research, use these terms in an effort to make it appear that evolutionary biology is a form of secular religion.

Charles Darwin theory of evolution
Evolutionism is the false belief that man evolved from animials. Darwin's idea has created tragety such as the following: the Nazi holocost, rascism, shootings, homosexual behavior, and superiority. Evolutionism has been proven wrong many times such as population would be a lot much greater if the earth was millions of years old, Darwins finches had different beaks because they had ate different kinds of nuts, the neandrathals were distinctly human because of their skulls features, and the Piltdown Man which was actually a skull of a dark aged man and a modern orangutan jawbone combined. Evolutionism is a false idea.

Modern usage
In modern times, the term evolution is widely used, but the terms evolutionism and evolutionist are not used in the scientific community to refer to the biological discipline as the term is considered both redundant and anachronistic, though it has been used in discussing the creation-evolution controversy.

The Institute for Creation Research, however, in order to treat evolution as a category of religions, including atheism, fascism, humanism and occultism, commonly uses the words evolutionism and evolutionist to describe the consensus of mainstream science and the scientists subscribing to it, thus implying through language that the issue is a matter of religious belief. The basis of this argument is to establish that the creation-evolution controversy is essentially one of interpretation of evidence, without any overwhelming proof (beyond current scientific theories) on either side. Creationists tend to use the term evolutionism in an attempt to suggest that the theory of evolution and creationism are equal in a philosophical debate.