The state of being adapted; suitableness; fitness.(noun)
The result of being adapted.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "adaptedness" in a sentence
"To him, adaptedness is fundamental and autism is the result of an emotional imbalance."
"How would an environment of evolutionary adaptedness explain those findings?"
"Thus we can define natural selection as follows: Natural selection is differential reproduction due to differential fitness (or differential adaptedness) within a common selective environment (see next section)."