UNIVALENT

Pronunciation (US):

(GB):

 Dictionary entry overview: What does univalent mean? 

• UNIVALENT (adjective)
  The adjective UNIVALENT has 2 senses:

1. used of a chromosome that is not paired or united with its homologous chromosome during synapsis

2. having a valence of 1

  Familiarity information: UNIVALENT used as an adjective is rare.

 Dictionary entry details 

• UNIVALENT (adjective)

Sense 1

Meaning:

Used of a chromosome that is not paired or united with its homologous chromosome during synapsis

Context example:

a univalent chromosome

Attribute:

valence; valency ((biology) a relative capacity to unite or react or interact as with antigens or a biological substrate)

Domain category:

genetic science; genetics (the branch of biology that studies heredity and variation in organisms)

Antonym:

bivalent (used of homologous chromosomes associated in pairs in synapsis)

multivalent (used of the association of three or more homologous chromosomes during the first division of meiosis)

Sense 2

Meaning:

Having a valence of 1

Synonyms:

monovalent; univalent

Attribute:

valence; valency ((chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent))

Domain category:

chemical science; chemistry (the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions)

 Context examples 

The univalent radical -COOH; present in and characteristic of organic acids.

(Carboxyl Group, NCI Thesaurus)

Argatroban is a univalent and direct inhibitor of fibrin-bound thrombin.

(Argatroban, NCI Thesaurus)

Hemagglutination test in which Coombs' reagent (antiglobulin, or anti-human globulin rabbit immune serum) is added to detect incomplete (non-agglutinating, univalent, blocking) antibodies coating erythrocytes.

(Coombs Test, NLM, Medical Subject Headings)

Amine having a univalent organic group (as phenyl) derived from an aromatic hydrocarbon by the removal of one hydrogen atom.

(Aromatic Amines, NCI Thesaurus)

The univalent hydrocarbon radical -NH2.

(Amine Group, NCI Thesaurus)