The phrase "fluid entity" is correct and can be used in written English.
It is typically used to describe something that is constantly changing or evolving. Example: "The concept of beauty is a fluid entity, with different cultures and time periods having different standards and perceptions."
We wanted the greenery to be like a fluid entity that moved you through the spaces naturally.
A growth mindset allows us to believe that our intelligence is a fluid entity and we have great control over how intelligent we are and how successful we can be.
As he analyzes the subtle ways, for example, that biblical references shape the meanings and language of Kafka's allegorical "Amerika," Mr. Alter concludes that the Bible "has become a fluid entity, the components of the biblical corpus imagined in restless circulation, doubling back on one another, challenging or unsettling one another".
In this case, the fluid entity is broken into fragments by circular motion.
We also found that 'team', in the ICU, is not a unified body but rather is a complex and fluid entity composed of core and expanded groups.
Genomes are fluid entities that undergo structural rearrangements producing phenotypic changes.
Health systems are complex and fluid entities working at multiple levels; there are no simple solutions[ 39].
The intention here is for publications to become fluid entities, created in a collaborative and evolutionary fashion over time, in much the same way as open-source software is developed; there are also parallels here with successful social/collaborative annotation models such as Wikipedia.
In particular, the concepts of data encapsulation and inheritance available within Fortran language (from standard 2003) have been stressed in order to represent each fluid dynamics "entity" (e.g. the conservative variables of a finite volume, its geometry, etc…) by a single object so that a large variety of computational libraries can be easily (and efficiently) developed upon these objects.
How two people can converge as a fluid, productive entity, able to sustain shared beliefs and goals over a significant period of time is nothing short of remarkable.
Eventually we must come to terms with the fact that genomes, computations, and mind are fluid, continuous entities, in both space and time.
