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u·ni·va·lent

(y′nĭ-vālənt)

adj.

1. Chemistry

a. Having valence 1, regardless of whether the valence is positive or negative.

b. Having only one valence.

2. Genetics Of or relating to a chromosome that is not paired or united with its homologous chromosome during synapsis.

3. Immunology Having only one site of attachment. Used of an antibody or antigen.

4. Immunology Containing antigens from a single strain of a microorganism or virus. Used of a vaccine or serum.

n.
Genetics

A univalent chromosome.

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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