Wiktionary
n. (context philosophy English) The belief in emergence, particularly as it involves consciousness and the philosophy of mind, and as it contrasts (or not) with reductionism.
Wikipedia
In philosophy, emergentism is the belief in emergence, particularly as it involves consciousness and the philosophy of mind, and as it contrasts (or not) with reductionism. A property of a system is said to be emergent if it is a new outcome of some other properties of the system and their interaction, while it is itself unexpected and different from them. Emergent properties are not identical with, reducible to, or deducible from the other properties. The different ways in which this independence requirement can be satisfied lead to variant types of emergence.
Usage examples of "emergentism".
The relationships are characterised by rampant emergentism: roles are allocated almost from the start and any deviation meets with an aggressive, even violent reaction.