OALD ２ a mental state achieved by concentrating on the present moment , while calmly accepting the feelings and thoughts that come to you, used as a technique to help you relax ・A therapist may teach mindfulness, a concept borrowed from Zen Buddhism.
LDOCE a way of improving your mental state that involves paying close attention to everything that you are experiencing, especially during quiet meditation
CALD -- ４版（２０１３）の本に掲載ないので最近ネット版に追記された模様 the practice of being aware of your body, mind, and feelings in the present moment, thought to create a feeling of calm: ・Mindfulness can be used to alleviate feelings of anxiety and depression.
