1520s, "attention, heedfulness; intention, purpose," from mindful + -ness. As "psychological process of bringing one's attention to experiences in the present moment," as developed through meditation, etc., it was in use by 1995; the word was used since late 19c. in translations of Buddhist texts (for sati).
mind
mind-boggling
-minded
minder
mindful
mindfulness
mindless
mind-reader
mindset
mine
minefield