Bivalent may refer to: *

Bivalent (chemistry) In chemistry, the valence (US spelling) or valency (British spelling) of an atom is a measure of its combining capacity with other atoms when it forms chemical compounds or molecules. Valence is generally understood to be the number of chemica ...

, a molecule formed from two or more atoms bound together * Bivalent ligand, a

ligand In coordination chemistry, a ligand is an ion or molecule with a functional group that binds to a central metal atom to form a coordination complex. The bonding with the metal generally involves formal donation of one or more of the ligand's el ...

of two drug-like molecules *

Bivalent (genetics) In cellular biology, a bivalent is one pair of chromosomes (homologous chromosomes) in a tetrad. A tetrad is the association of a pair of homologous chromosomes (4 sister chromatids) physically held together by at least one DNA crossover. This ...

, a pair of homologous chromosomes * Bivalent vaccine, a vaccine directed at two pathogens or two strains of a pathogen *

Bivalent (engine) A bivalent engine is an engine that can use two different types of fuel. Examples are petroleum/CNG and petroleum/Liquefied Petroleum Gas, LPG engines, which are widely available in the European passenger vehicle aftermarket. Types Alcohol and ...

, an engine that can operate on two different types of fuel *A verb with a valency of two *

Principle of bivalence In logic, the semantic principle (or law) of bivalence states that every declarative sentence expressing a proposition (of a theory under inspection) has exactly one truth value, either true or false. A logic satisfying this principle is calle ...

, a semantic principle in logic

See also