What's the difference between expand and extend?

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.

Extend


Definition:

  • (v. t.) To stretch out; to prolong in space; to carry forward or continue in length; as, to extend a line in surveying; to extend a cord across the street.
  • (v. t.) To enlarge, as a surface or volume; to expand; to spread; to amplify; as, to extend metal plates by hammering or rolling them.
  • (v. t.) To enlarge; to widen; to carry out further; as, to extend the capacities, the sphere of usefulness, or commerce; to extend power or influence; to continue, as time; to lengthen; to prolong; as, to extend the time of payment or a season of trail.
  • (v. t.) To hold out or reach forth, as the arm or hand.
  • (v. t.) To bestow; to offer; to impart; to apply; as, to extend sympathy to the suffering.
  • (v. t.) To increase in quantity by weakening or adulterating additions; as, to extend liquors.
  • (v. t.) To value, as lands taken by a writ of extent in satisfaction of a debt; to assign by writ of extent.

Example Sentences:

  • (1) Therefore, these findings may extend the use of platelets as neuronal models.
  • (2) These cells contained organelles characteristic of the maturation stage ameloblast and often extended to the enamel surface, suggesting a possible origin from the ameloblast layer.
  • (3) Limited biopsic retroperitoneal lymphnode dissection subsequently extended following the result of the frozen section histology.
  • (4) Asthma is probably the commonest chronic disease in the United Kingdom, and its attendant morbidity extends outside the possible scope of the hospital sector.
  • (5) Doppler sample volume was extended to about 1.2 X 1.6 X 4.0 mm.
  • (6) Delta roc, which extends from base pairs 41883 to 43825, overlaps the nin5 deletion, which extend from base pairs 40501 to 43306.
  • (7) TNBS reacts to an extremely small extend with hemoglobin over the concentration range 0.4 to 4 mM whereas FDNB reacts with hemoglobin to a very large extent (50 fold more than TNBS).
  • (8) Four cDNAs extending into the 5'-noncoding region of the human von Willebrand factor cDNA have been characterized.
  • (9) This article, a review of factors controlling vasopressin (AVP) release in pregnancy, extends our contribution to a symposium in this journal published in 1987 (vol X, pp 270-275).
  • (10) The molecule may already in its native form have an extended conformation containing either free sulfhydryl groups or small S-S loops not affecting mobility in SDS-PAGE.
  • (11) Analysis of 156 records relating to patients at the age of 15 to 85 years with extended purulent peritonitis of the surgical and gynecological genesis (the toxic phase, VI category ASA) showed that combination of programmed sanitation laparotomy and intensive antibacterial therapy performed as short-term courses before, during and after the operation with an account of the information on the nature of the microbial associations and antibioticograms was an efficient procedure in treatment of severe peritonitis.
  • (12) The IL-8 isolated from each of these cell types is a mixture of two IL-8 polypeptides, one consisting of 72 amino acids (herein called [ser-IL-8]72) and the other 77 amino acids (an N-terminal extended form herein called [ala-IL-8]77).
  • (13) The follow-up period extended over 8 years to June 1978.
  • (14) Follow-up for half of the cases operated extended up to 2 years, the longest being up to 5 years, showed that 96% of the patients were satisfied.
  • (15) Lateral upper and lower lid lysis allows the needed extended period of healing.
  • (16) But still we have to fight for health benefits, we have to jump through loops … Why doesn’t the NFL offer free healthcare for life, especially for those suffering from brain injury?” The commissioner, however, was quick to remind Davis that benefits are agreed as part of the collective bargaining process held between the league and the players’ union, and said that they had been extended during the most recent round of negotiations.
  • (17) The third patient was using an extended-wear soft contact lens for correction of residual myopia.
  • (18) The horizontal portion of the intracavernous ICA as well as the whole aspect of the aneurysm could be exposed as a result of the extended opening of the cavernous roof anterior to the posterior clinoid process.
  • (19) After an introductory note on primary preventive intervention of breast cancer during adulthood, the author defends and extends a hypothesis that relates most of the known risk factors for this disease to the development of preneoplastic lesions in the breast.
  • (20) The pineal of certain lizards possesses a finger-like projection that extends toward the parietal eye.