Flow: the word and the concept (Materialist hipster yells at cloud)

I don't like the word "flow" very much, in terms of the concept in psychology. I also don't like the other version of the concept, being "In the zone." I'm uncomfortable with the degree to which that kind of language seems to spiritualize or mysticize the concept.

I realize that many people are perfectly comfortable with that kind of construction, but it doesn't fit neatly into my internal monologue, and for totally unjustified reasons it bugs me that the scientific term for the concept, "Flow," isn't something more, like, y'know, clinical. 

I want to be able to think the sentence "I arrange my working time and space like this in order to achieve a state of [BLANK]," and I want the word I put in that blank to sound, like, sciencey, you know? Like, "Persisting engagement," or "Somatic focus," or "Csíkszentmihályi's state."

But when you put "Flow" in that blank, it sounds like I should be having some kind of religious experience, or that my emotional state at the time is the primary point of focus. And it's not. Flow is a lot of fun, I definitely enjoy the state, but I don't like thinking of it as a kind of meditation or spirituality. I don't want it to be about the process, I want it to be about the product. For me, focusing on process is something else. That's practice. It's a much more intentional, much less flow-like state. And if I'm going to meditate, I'd rather just meditate. 

I don't have any kind of point here. I don't actually want to enforce a certain kind of presentation of formal labeling in the social sciences. This just happens to be one of the areas where my prejudices and insecurities intersect a kind of postmodernity in a way that puts me on the conservative side of the discomfort.