What's the difference between dilate and expand?

Dilate


Definition:

  • (v. t.) To expand; to distend; to enlarge or extend in all directions; to swell; -- opposed to contract; as, the air dilates the lungs; air is dilated by increase of heat.
  • (v. t.) To enlarge upon; to relate at large; to tell copiously or diffusely.
  • (v. i.) To grow wide; to expand; to swell or extend in all directions.
  • (v. i.) To speak largely and copiously; to dwell in narration; to enlarge; -- with on or upon.
  • (a.) Extensive; expanded.

Example Sentences:

  • (1) Intestinal dilatation seemed in all cases a response to elevated CO2 only.
  • (2) In the absence of atrial dilatation there was minimal stimulus for ANF secretion.
  • (3) Evaluation revealed tricuspid insufficiency, a massively dilated right internal jugular vein, and obstruction of the left internal jugular vein.
  • (4) Midtrimester abortion by the dilatation and evacuation (D&E) method has generated controversy among health care providers; many authorities insist that this procedure should be performed only by a small group of experts.
  • (5) DPI 201-106 (DPI) as a positive inotropic drug might be useful in treating dilated cardiomyopathy (DCM).
  • (6) In one of the cirrhotic patients, postmortem correlation of sonographic, angiographic, and pathological findings showed that the dilated vessels seen on sonography were cystic veins draining normally into the portal vein rather than portosystemic anastomoses.
  • (7) Combined SEM and TEM examination of the endothelium of compressed segments revealed "craters" and "balloons", blebs and vacuoles, swollen mitochondria, dilated granular endoplasmic reticulum, and subendothelial edema.
  • (8) Light microscopy of both apneics and snorers revealed mucous gland hypertrophy with ductal dilation and focal squamous metaplasia, disruption of muscle bundles by infiltrating mucous glands, focal atrophy of muscle fibers, and extensive edema of the lamina propria with vascular dilation.
  • (9) Myogenic constrictions and dilations was observed when IP was increased (greater than 60 cmH2O) and decreased (less than 60 cmH2O), respectively.
  • (10) Four hundred and twenty-five lesions were dilated in 370 patients.
  • (11) Most often, constrictor fibres follow the course of the pterygo-palatine nerve, when dilator fibres follow the infraorbital nerve.
  • (12) These early hyperplastic lesions revealed stellate-shaped dilated bile canaliculi lined by blebs and abnormally thick elongated microvilli, a decreased number of microvilli on the sinusoidal surface, a marked increase in smooth endoplasmic reticulum, large nucleoli, and bundles of pericanalicular microfilaments.
  • (13) Further management of the congenital cases was based on the experience that children outgrow this disorder; periodic dilatation may augment the natural process.
  • (14) The average size of stenosis after dilation was 32%.
  • (15) Computer-aided axial tomography revealed progressive development of atrophy of the left hemisphere and compensatory dilatation of the ventricles.
  • (16) The distinction between idiopathic dilated cardiomyopathy and myocarditis is controversial, both clinically and pathologically.
  • (17) In the remaining 60 patients (35 with atherosclerotic stenosis and 25 with fibromuscular dysplasia), both mean systolic and diastolic pressure fell immediately after percutaneous transluminal dilatation and remained significantly lower for a period of up to five years.
  • (18) The time for cervical dilatation from 7 to 10 cm and duration of the second stage of labor did not influence maternal morbidity or fetal outcome, regardless of the method of anesthesia.
  • (19) Histamine elicited arteriolar dilation which was blocked by metiamide suggesting the presence of H2 receptors.
  • (20) In 1 patient there was concomitant aneurysmal dilatation of the brachiocephalic trunk.

Expand


Definition:

  • (v. t.) To lay open by extending; to open wide; to spread out; to diffuse; as, a flower expands its leaves.
  • (v. t.) To cause the particles or parts of to spread themselves or stand apart, thus increasing bulk without addition of substance; to make to occupy more space; to dilate; to distend; to extend every way; to enlarge; -- opposed to contract; as, to expand the chest; heat expands all bodies; to expand the sphere of benevolence.
  • (v. t.) To state in enlarged form; to develop; as, to expand an equation. See Expansion, 5.
  • (v. i.) To become widely opened, spread apart, dilated, distended, or enlarged; as, flowers expand in the spring; metals expand by heat; the heart expands with joy.

Example Sentences:

  • (1) Blood flow decreased immediately after skin expansion in areas over the tissue expander on days 0 and 1 and returned to baseline levels within 24 hours.
  • (2) Histiocytes, lymphocytes, immunoblasts, and plasma cells were present in expanded paracortical regions which encroached on, and occasionally effaced, lymphoid follicles.
  • (3) About 30% of clonable T cells, including both CD4+ CD8- and CD4- CD8+ cells, could be expanded for assay at an average of 22 days after cloning.
  • (4) Providers of services and their reimbursement will also expand.
  • (5) The availability of locus-specific probes should significantly expand the role of minisatellite markers in population biology.
  • (6) The expectation of life at birth was only 30-35 years, but it was long enough to allow for children to be born and for the populations to expand.
  • (7) Thus, whereas CD3-associated molecules isolated from polyclonal CD3+WT31+ populations (expanded in IL 2 under the same culture conditions) appeared as diffuse bands, CD3-associated molecules isolated from CD3+WT31- populations displayed a homogeneous molecular mass.
  • (8) The analysis is further expanded to a more general case to result in four criteria based upon the energy concepts.
  • (9) Guanabenz is acutely natriuretic and diuretic in saline expanded animals.
  • (10) Abe’s longstanding efforts toward those goals, which include the successful passage of a state secrets act and efforts to expand the scope of Japan’s military activities have already damaged relations with China.
  • (11) It is worth noting though that the government is reaping scant reward in the polls even though the economy has expanded by more than 3% over the past year and – according to the IMF – will be the fastest growing of the G7 economies this year.
  • (12) A developing sophistication on the part of both children and parents, coupled with a rapidly expanding recognition of the need to minimize the amount of physical and psychological trauma that a child has to experience, has led to a growing use of premedication agents for children.
  • (13) The expanded tumor-infiltrating cells were Leu-4+ T cells, and in five of six patients the majority were Leu-3+.
  • (14) Further development of meta-analysis in such an expanded way may have an important impact on decision-making in clinical medicine, and in health policies.
  • (15) Our understanding of the organisation of eye movements has been greatly expanded in recent years, mainly due to studies in animals.
  • (16) Although the group is constantly the target of an all-out political assault, it has a robust national fundraising operation that allows it to subsidize abortions for poor women and expand to new locations.
  • (17) In 2013 it successfully applied for a Visa Innovation Grant , a fund for development and non-profit organisations seeking to adopt or expand the use of electronic payments to those living below the poverty line.
  • (18) The intervertebral discs expand centrally and become increasingly convex.
  • (19) Jubilant Democrats are eyeing so-called “red states” such as Georgia and Utah and expanding their ambitions to take both the Senate and House .
  • (20) Labour's education spokesman, Ed Balls, said it was important to continue expanding the number of graduates.