1. Forming a necessary base or core; of central importance.
  2. Affecting or relating to the essential nature of something or the crucial point about an issue.


  1. A central or primary rule or principle on which something is based.
  2. Music:  A fundamental note, tone, or frequency.
  3. Blog:  A weblog forming a necessary base or core of intellectual and philosophical inquiry, of central importance to a thoughtful person’s day, offering the essential nature and crucial points of the issues shaping today and tomorrow.