hes·y·chas·tic \| ̷ ̷ ̷ ̷|kastik\adjective Etymology: Greek hēsychastikos, from (assumed) Greek hēsychastos (verbal of hēsychazein) + Greek -ikos -ic 1.: soothing, calming — used especially of a style of ancient Greek music 2.often capitalized[hesychast + -ic]: of or relating to the hesychasts or their solitary meditative mysticism