(n.) An elementary substance, resembling a metal in its appearance and physical properties, but in its chemical relations belonging to the class of nonmetallic substances. Atomic weight, 120. Symbol, Sb.
(n.) Opposition of one law or rule to another law or rule.
(n.) An opposing law or rule of any kind.
(n.) A contradiction or incompatibility of thought or language; -- in the Kantian philosophy, such a contradiction as arises from the attempt to apply to the ideas of the reason, relations or attributes which are appropriate only to the facts or the concepts of experience.