Search the Dictionary

Consisting of two; pertaining to dualism or duality. Dualistic system or theory (Chem.), 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 possessed of opposite chemical or e…

Of or pertaining to the individual or individualism. London Athenæum.

Pertaining to ditheism; dualistic.

Of or pertaining to Ahura-Mazda, or Ormuzd, the beneficent deity in the Zoroastrian dualistic system; hence, Zoroastrian.

d. Sulphuric acid. (a) Sulphur trioxide (see under Sulphur); -- formerly so called on the dualistic theory of salts. [Obs.] (b) A heavy, corrosive, oily liquid, H2SO4, colorless when pure, but usually yellowish or brownish, produced by the combined action of sulphur dioxide, oxygen (from the air), steam, and nitric fum…

, and are not mere aggregations of more or less complex groups; -- distinguished from the dualistic theory.