DILATATION

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IPA (US):

 Dictionary entry overview: What does dilatation mean? 

• DILATATION (noun)
  The noun DILATATION has 2 senses:

1. the state of being stretched beyond normal dimensions

2. the act of expanding an aperture

  Familiarity information: DILATATION used as a noun is rare.

 Dictionary entry details 

• DILATATION (noun)

Sense 1

Meaning:

The state of being stretched beyond normal dimensions

Classified under:

Nouns denoting stable states of affairs

Synonyms:

dilatation; distension; distention

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

physical condition; physiological condition; physiological state (the condition or state of the body or bodily functions)

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

tympanites (distension of the abdomen that is caused by the accumulation of gas in the intestines or the peritoneal cavity)

ectasia; ectasis (dilatation or distension of a hollow organ)

varicocele (dilatation of the veins associated with the spermatic cord in the testes)

Derivation:

dilate (become wider)

Sense 2

Meaning:

The act of expanding an aperture

Classified under:

Nouns denoting acts or actions

Synonyms:

dilatation; dilation

Context example:

the dilation of the pupil of the eye

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

enlargement; expansion (the act of increasing (something) in size or volume or quantity or scope)

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

vasodilation (dilation of blood vessels (especially the arteries))

mydriasis (reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs)

Derivation:

dilate (become wider)

 Context examples 

Felodipine inhibits the influx of extracellular calcium ions into myocardial and vascular smooth muscle cells, causing dilatation of the main coronary and systemic arteries and decreasing myocardial contractility.

(Felodipine, NCI Thesaurus)

It is associated with dilatation of the ventricles.

(Grade 3 Intraventricular Hemorrhage of the Newborn, NCI Thesaurus)

Eprosartan blocks the binding of angiotensin II to the angiotensin (AT)1 receptor in vascular smooth muscle, thereby blocking the principal pressor action of angiotensin II on the renin-angiotensin system resulting in vascular dilatation.

(Eprosartan, NCI Thesaurus)

Diltiazem inhibits the transmembrane influx of extracellular calcium ions into select myocardial and vascular smooth muscle cells, causing dilatation of coronary and systemic arteries and decreasing myocardial contractility.

(Diltiazem Malate, NCI Thesaurus)

Diltiazem hydrochloride inhibits the transmembrane influx of extracellular calcium ions into select myocardial and vascular smooth muscle cells, causing dilatation of coronary and systemic arteries and decreasing myocardial contractility.

(Diltiazem Hydrochloride, NCI Thesaurus)

This leads to smooth muscle cell relaxation causing arterial and venous dilatation.

(Nesiritide, NCI Thesaurus)

Dilatation of the veins results in decreased venous return to the heart, thereby decreasing left ventricular volume (reduced preload) and decreasing myocardial oxygen requirements.

(Nitroglycerin, NCI Thesaurus)

A non-neoplastic polyp that arises from the stomach and is characterized by the presence of smooth muscle branching bands, and hyperplasia with cystic dilatation of the foveolar epithelium.

(Peutz-Jeghers Polyp of the Stomach, NCI Thesaurus)

An electrocardiographic finding suggesting underlying hypertrophy or dilatation of the right atrium.

(P-pulmonale by ECG Finding, NCI Thesaurus)

An electrocardiographic finding suggesting underlying hypertrophy or dilatation of the left atrium.

(P-mitrale by ECG Finding, NCI Thesaurus)