That's what I mean yes. English isn't my first language. How should I have phrased it?
I'm not sure. We don't really have a specific term for it as far as I know.
I think it's mostly confusing because we're talking about how healthy food is, and because you talked about a ratio. Since we're in a situation too many calories is more of an issue than too few, nutrition-per-calorie is used as a rough proxy for how "healthy" a food is. Pure lard has a higher nutrition-per-gram ratio than beef. (So long as you consider calories to be part of the "nutrition".)
I'm assuming here that we're talking about "nutrient density"—the ratio of nutrients per calorie. Is that what you means? Or are you using something like "per gram"?