Definition of "bivalent" in Anglais

adjective

1. (inorganic chemistry, organic chemistry, physical chemistry) Having a valence of 2; having two ligands

2. (genetics) Of, or relating to a pair of homologous synapsed chromosomes that occur during meiosis.

3. (of a vaccine) Protecting against two different viruses.

noun

1. (genetics) Any bivalent chromosome.