Medical Definition of narcissistic personality disorder. : a personality disorder characterized especially by an exaggerated sense of self-importance, persistent need for admiration, lack of empathy for others, excessive pride in achievements, and snobbish, disdainful, or patronizing attitudes.
For the purposes of sym metry, letâs now move on to the most common variant of syn- , or sym- , which also means âtogether.â A sym phony is the sounding âtogetherâ of many instruments.
Synergy: Synergy comes from the Greek word synergia, meaning joint work and cooperative action. when the result is greater than the sum of the parts. create an outcome that is in some way of more value than the total of what the individual inputs are.