Dualitynoun
A classification into two subclasses or opposed parts.
Dualitynoun
(projective geometry) The interchangeability of points and planes.
Dualitynoun
The mathematical equivalence of two seemingly different theoretical descriptions of a physical system.
Dualitynoun
The quality or condition of being two or twofold; dual character or usage.
Dualitynoun
being twofold; a classification into two opposed parts or subclasses;
Dualitynoun
(physics) the property of matter and electromagnetic radiation that is characterized by the fact that some properties can be explained best by wave theory and others by particle theory
Dualitynoun
(geometry) the interchangeability of the roles of points and planes in the theorems of projective geometry
Dualismnoun
Duality; the condition of being double.
Dualismnoun
(philosophy) The view that the world consists of, or is explicable in terms of, two fundamental principles, such as mind and matter or good and evil.
Dualismnoun
(theology) The belief that the world is ruled by a pair of antagonistic forces, such as good and evil; the belief that man has two basic natures, the physical and the spiritual.
Dualismnoun
The theory, originated by Lavoisier and developed by Berzelius, that all definite compounds are binary in their nature, and consist of two distinct constituents, themselves simple or complex, and having opposite chemical or electrical affinities.
Dualismnoun
State of being dual or twofold; a twofold division; any system which is founded on a double principle, or a twofold distinction
Dualismnoun
the doctrine that reality consists of two basic opposing elements, often taken to be mind and matter (or mind and body), or good and evil