metaphysic noun 3adjective 1forms 1 noun3 •The metaphysical system of a particular philosopher or of a particular school of thought.It should be pointed out to the prospective reader that he will not find here the systematic presentation of a metaphysic. — 1954 •A fundamental principle or key concept.What we need as a metaphysic and what the logical realists are at least glimpsing, is the principle of contradiction. — 1927 •(no longer used) The field of study of metaphysics.With reference to general Philosophy or Metaphysic proper, psychology may be viewed as a kind of common ground whereon thinkers of widely different schools may meet. — 1876 adjective1 •(no longer used) Metaphysical.Bring sweet philosophy along, In metaphysic dreams. — 1720 formsmetaphysics