defense mechanism: (psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires
psychoanalytic process: a process that is assumed to occur in psychoanalytic theory
cycadopsida: palmlike gymnosperms: includes the surviving order Cycadales and several extinct orders; possibly not a natural group; in some systems considered a class (Cycadopsida) and in others a subdivision (Cycadophytina or Cycadophyta)