DISSOCIATION

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does dissociation mean? 

• DISSOCIATION (noun)
  The noun DISSOCIATION has 3 senses:

1. the act of removing from association

2. a state in which some integrated part of a person's life becomes separated from the rest of the personality and functions independently

3. (chemistry) the temporary or reversible process in which a molecule or ion is broken down into smaller molecules or ions

  Familiarity information: DISSOCIATION used as a noun is uncommon.

 Dictionary entry details 

• DISSOCIATION (noun)

Sense 1

Meaning:

The act of removing from association

Classified under:

Nouns denoting acts or actions

Hypernyms ("dissociation" is a kind of...):

separation (the act of dividing or disconnecting)

Derivation:

dissociate (regard as unconnected)

dissociate (part; cease or break association with)

Sense 2

Meaning:

A state in which some integrated part of a person's life becomes separated from the rest of the personality and functions independently

Classified under:

Nouns denoting stable states of affairs

Synonyms:

disassociation; dissociation

Hypernyms ("dissociation" is a kind of...):

mental condition; mental state; psychological condition; psychological state ((psychology) a mental condition in which the qualities of a state are relatively constant even though the state itself may be dynamic)

Hyponyms (each of the following is a kind of "dissociation"):

compartmentalisation; compartmentalization (a mild state of dissociation)

dissociative disorder (dissociation so severe that the usually integrated functions of consciousness and perception of self break down)

Derivation:

dissociate (regard as unconnected)

dissociate (part; cease or break association with)

Sense 3

Meaning:

(chemistry) the temporary or reversible process in which a molecule or ion is broken down into smaller molecules or ions

Classified under:

Nouns denoting natural processes

Hypernyms ("dissociation" is a kind of...):

chemical action; chemical change; chemical process ((chemistry) any process determined by the atomic and molecular composition and structure of the substances involved)

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)

Derivation:

dissociate (to undergo a reversible or temporary breakdown of a molecule into simpler molecules or atoms)

 Context examples 

This results in peptidyl-tRNA dissociation from ribosomes, and leads to the release of incomplete proteins, ultimately causing cell death.

(Lincosamide Antibiotic, NCI Thesaurus)

In mass spectrometry, a product ion resulting from the dissociation of a precursor ion.

(Fragment Ion, NCI Thesaurus)

This protein is comprised of the N-terminal nucleoporin GLFG repeat domains of nuclear pore complex protein Nup98-Nup96 fused to all but the first methionine of the Rap1 GTPase-GDP dissociation stimulator 1 protein.

(NUP98/RAP1GDS1 Fusion Protein, NCI Thesaurus)

Moreover, leukocytes activate endothelial cell signals that stimulate endothelial cell retraction during localized dissociation of the endothelial cell junctions.

(Leukocyte Transendothelial Migration Pathway, NCI Thesaurus/KEGG)

In stressful conditions, dissociation of oligomeric Hsp27 by phosphorylation may allow lower molecular weight forms to perform other non-chaperone functions.

(HSP27 Regulation Pathway, NCI Thesaurus/BIOCARTA)

Cell stimulation causes its dissociation and translocation of active NF-kappa B to the nucleus.

(I Kappa B, NLM, Medical Subject Headings)

An electrocardiographic finding of a type of atrioventricular dissociation characterized by the atria (P waves) and ventricles (QRS complexes) beating at similar rates, although independently.

(Isorhythmic Atrioventricular Dissociation, NCI Thesaurus/CDISC)

FRAP/mTOR, together with an unidentified kinase, phosphorylates 4E-BP, leading to its dissociation from and activation of eIF-4E.

(eIF4 Regulation Pathway, NCI Thesaurus/BIOCARTA)

Compared to amylin, davalintide shows a prolonged duration of action due to its slowed receptor dissociation.

(Davalintide, NCI Thesaurus)

This signaling ultimately results in the dissociation of the Gli1 transcription factor from an inhibitory complex in the cytoplasm, its subsequent translocation to the nucleus, and activation of target gene expression.

(Basal Cell Carcinoma Pathway, NCI Thesaurus/KEGG)