What is the meaning of Creationism?

The Abrahamic doctrine that each individual human soul is created by God, as opposed to traducianism.

Any creationary belief, especially a belief that the origin of things is due to an event or process of creation brought about by the deliberate act of any divine agency, such as a Creator God.

The belief that a deity created the world, especially as described in a particular religious text, such as the Quran or the Book of Genesis.

Source: wiktionary.org