What's the difference between point and surface?

Point


Definition:

  • (v. t. & i.) To appoint.
  • (n.) That which pricks or pierces; the sharp end of anything, esp. the sharp end of a piercing instrument, as a needle or a pin.
  • (n.) An instrument which pricks or pierces, as a sort of needle used by engravers, etchers, lace workers, and others; also, a pointed cutting tool, as a stone cutter's point; -- called also pointer.
  • (n.) Anything which tapers to a sharp, well-defined termination. Specifically: A small promontory or cape; a tract of land extending into the water beyond the common shore line.
  • (n.) The mark made by the end of a sharp, piercing instrument, as a needle; a prick.
  • (n.) An indefinitely small space; a mere spot indicated or supposed. Specifically: (Geom.) That which has neither parts nor magnitude; that which has position, but has neither length, breadth, nor thickness, -- sometimes conceived of as the limit of a line; that by the motion of which a line is conceived to be produced.
  • (n.) An indivisible portion of time; a moment; an instant; hence, the verge.
  • (n.) A mark of punctuation; a character used to mark the divisions of a composition, or the pauses to be observed in reading, or to point off groups of figures, etc.; a stop, as a comma, a semicolon, and esp. a period; hence, figuratively, an end, or conclusion.
  • (n.) Whatever serves to mark progress, rank, or relative position, or to indicate a transition from one state or position to another, degree; step; stage; hence, position or condition attained; as, a point of elevation, or of depression; the stock fell off five points; he won by tenpoints.
  • (n.) That which arrests attention, or indicates qualities or character; a salient feature; a characteristic; a peculiarity; hence, a particular; an item; a detail; as, the good or bad points of a man, a horse, a book, a story, etc.
  • (n.) Hence, the most prominent or important feature, as of an argument, discourse, etc.; the essential matter; esp., the proposition to be established; as, the point of an anecdote.
  • (n.) A small matter; a trifle; a least consideration; a punctilio.
  • (n.) A dot or mark used to designate certain tones or time
  • (n.) A dot or mark distinguishing or characterizing certain tones or styles; as, points of perfection, of augmentation, etc.; hence, a note; a tune.
  • (n.) A dot placed at the right hand of a note, to raise its value, or prolong its time, by one half, as to make a whole note equal to three half notes, a half note equal to three quarter notes.
  • (n.) A fixed conventional place for reference, or zero of reckoning, in the heavens, usually the intersection of two or more great circles of the sphere, and named specifically in each case according to the position intended; as, the equinoctial points; the solstitial points; the nodal points; vertical points, etc. See Equinoctial Nodal.
  • (n.) One of the several different parts of the escutcheon. See Escutcheon.
  • (n.) One of the points of the compass (see Points of the compass, below); also, the difference between two points of the compass; as, to fall off a point.
  • (n.) A short piece of cordage used in reefing sails. See Reef point, under Reef.
  • (n.) A a string or lace used to tie together certain parts of the dress.
  • (n.) Lace wrought the needle; as, point de Venise; Brussels point. See Point lace, below.
  • (n.) A switch.
  • (n.) An item of private information; a hint; a tip; a pointer.
  • (n.) A fielder who is stationed on the off side, about twelve or fifteen yards from, and a little in advance of, the batsman.
  • (n.) The attitude assumed by a pointer dog when he finds game; as, the dog came to a point. See Pointer.
  • (n.) A standard unit of measure for the size of type bodies, being one twelfth of the thickness of pica type. See Point system of type, under Type.
  • (n.) A tyne or snag of an antler.
  • (n.) One of the spaces on a backgammon board.
  • (n.) A movement executed with the saber or foil; as, tierce point.
  • (n.) To give a point to; to sharpen; to cut, forge, grind, or file to an acute end; as, to point a dart, or a pencil. Used also figuratively; as, to point a moral.
  • (n.) To direct toward an abject; to aim; as, to point a gun at a wolf, or a cannon at a fort.
  • (n.) Hence, to direct the attention or notice of.
  • (n.) To supply with punctuation marks; to punctuate; as, to point a composition.
  • (n.) To mark (as Hebrew) with vowel points.
  • (n.) To give particular prominence to; to designate in a special manner; to indicate, as if by pointing; as, the error was pointed out.
  • (n.) To indicate or discover by a fixed look, as game.
  • (n.) To fill up and finish the joints of (a wall), by introducing additional cement or mortar, and bringing it to a smooth surface.
  • (n.) To cut, as a surface, with a pointed tool.
  • (v. i.) To direct the point of something, as of a finger, for the purpose of designating an object, and attracting attention to it; -- with at.
  • (v. i.) To indicate the presence of game by fixed and steady look, as certain hunting dogs do.
  • (v. i.) To approximate to the surface; to head; -- said of an abscess.

Example Sentences:

  • (1) Single-case experimental designs are presented and discussed from several points of view: Historical antecedents, assessment of the dependent variable, internal and external validity and pre-experimental vs experimental single-case designs.
  • (2) Well tolerated from the clinical and laboratory points of view, it proved remarkably effective.
  • (3) We are pursuing legal action because there are still so many unanswered questions about the viability of Shenhua’s proposed koala plan and it seems at this point the plan does not guarantee the survival of the estimated 262 koalas currently living where Shenhua wants to put its mine,” said Ranclaud.
  • (4) She knows you can’t force the opposition to submit to your point of view.
  • (5) The isoelectric points (pI) of E1 and E2 for all VEE strains studied were approx.
  • (6) Ofcom will conduct research, such as mystery shopping, to assess the transparency of contractual information given to customers by providers at the point of sale".
  • (7) Fifty-two pairs of canine femora were tested to failure in four-point bending.
  • (8) A one point dilution enzyme-linked immunosorbent assay (ELISA) procedure suitable for determining immunoglobulin G (IgG) antibody levels to Toxoplasma gondii (T. gondii) in community seroepidemiological surveys is described.
  • (9) Subsequent isoelectric focusing in sucrose revealed an isoelectric point of 9.0-9.2.
  • (10) Gross deformity, point tenderness and decrease in supination and pronation movements of the forearm were the best predictors of bony injury.
  • (11) Whole-virus vaccines prepared by Merck Sharp and Dohme (West Point, Pa.) and Merrell-National Laboratories (Cincinnati, Ohio) and subunit vaccines prepared by Parke, Davis and Company (Detroit, Mich.) and Wyeth Laboratories (Philadelphia, Pa.) were given intramuscularly in concentrations of 800, 400, or 200 chick cell-agglutinating units per dose.
  • (12) A Monte Carlo simulation was performed to characterize the spatial and energy distribution of bremsstrahlung radiation from beta point sources important to radioimmunotherapy (RIT).
  • (13) From the social economic point of view nosocomial infections represent a very important cost factor, which could be reduced to great deal by activities for prevention of nosocomial infection.
  • (14) He said Germany was Russia’s most important economic partner, and pointed out that 35% of German gas originated in Russia.
  • (15) Many examples are given to demonstrate the applications of these programs, and special emphasis has been laid on the problem of treating a point in tissue with different doses per fraction on alternate treatment days.
  • (16) In 11 of the 22 cells PAI-1 mRNA and in 6 of the 22 cells PAI-2 mRNA was found, pointing to a possible role of plasminogen activator inhibitors in the tumor-related plasminogen activator activity.
  • (17) Sequence specific binding of protein extracts from 13 different yeast species to three oligonucleotide probes and two points mutants derived from Saccharomyces cerevisiae DNA binding proteins were tested using mobility shift assays.
  • (18) Recent studies point to the involvement of regulatory peptides in diseases of the gut and lung.
  • (19) The positive predictive accuracy of a biophysical profile score of 0, with mortality and morbidity used as end points, was 100%.
  • (20) The starting point is the idea that the current system, because it works against biodiversity but fails to increase productivity, is broken.

Surface


Definition:

  • (n.) The exterior part of anything that has length and breadth; one of the limits that bound a solid, esp. the upper face; superficies; the outside; as, the surface of the earth; the surface of a diamond; the surface of the body.
  • (n.) Hence, outward or external appearance.
  • (n.) A magnitude that has length and breadth without thickness; superficies; as, a plane surface; a spherical surface.
  • (n.) That part of the side which is terminated by the flank prolonged, and the angle of the nearest bastion.
  • (v. t.) To give a surface to; especially, to cause to have a smooth or plain surface; to make smooth or plain.
  • (v. t.) To work over the surface or soil of, as ground, in hunting for gold.

Example Sentences:

  • (1) The resulting dose distribution is displayed using traditional 2-dimensional displays or as an isodose surface composited with underlying anatomy and the target volume.
  • (2) Phospholipid methylation in human EGMs is distinctly different from that in rat EGMs (Hirata and Axelrod 1980) in that the human activity is not Mg++-dependent, and apparent methyltransferase I activity is located in the external membrane surface.
  • (3) To quantify the size of the lesion in mice, the area of the infarct on the brain surface was assessed planimetrically 48 h after MCA occlusion by transcardial perfusion of carbon black.
  • (4) Using monoclonal antibodies directed against the plasma membrane of Madin-Darby canine kidney (MDCK) cells, we demonstrated previously that a glycoprotein with an Mr = 23,000 (gp23) had a non-polarized cell surface distribution and was observed on both the apical and basolateral membranes (Ojakian, G. K., Romain, R. E., and Herz, R. E. (1987) Am.
  • (5) In the surface epithelial cells, the basolateral cell surface showed moderate enzymatic activity.
  • (6) Such an increase in antibody binding occurred simultaneously with an increase in the fluidity of surface lipid regions, as monitored by fluorescence depolarization of 1-(trimethylammoniophenyl)-6-phenyl-1,3,5-hexatriene.
  • (7) The role of Ca2+ in cell agglutination may be either to activate the cell-surface dextran receptor or to form specific intercellular Ca2+ bridges.
  • (8) The subcellular distribution of sialyltransferase and its product of action, sialic acid, was investigated in the undifferentiated cells of the rat intestinal crypts and compared with the pattern observed in the differentiated cells present in the surface epithelium.
  • (9) Even with hepatic lipase, phospholipid hydrolysis could not deplete VLDL and IDL of sufficient phospholipid molecules to account for the loss of surface phospholipid that accompanies triacylglycerol hydrolysis and decreasing core volume as LDL is formed (or for conversion of HDL2 to HDL3).
  • (10) A total of 555 caries lesions were registered on proximal surfaces, 49.1% being primary lesions in the enamel, 21.4% primary lesions into the dentin and 29.5% secondary lesions.
  • (11) Contact angles of Silafocon A and PMMA were relatively uninfluenced by front surface radii between 7.7 and 8.85 and 7.3 to 8.8 mm, respectively.
  • (12) 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.
  • (13) Together these observations suggest that cytotactin is an endogenous cell surface modulatory protein and provide a possible mechanism whereby cytotactin may contribute to pattern formation during development, regeneration, tumorigenesis, and wound healing.
  • (14) Our Ph1-positive ALL revealed B-cell lineage leukemia, since their surface phenotype were Ia+ and CD10+ and they have rearranged immunoglobulin JH genes.
  • (15) The complete nucleotide sequence of the gene for a cell surface protein antigen (SpaA) of Streptococcus sobrinus MT3791 (serotype g) was determined.
  • (16) To investigate the mechanism of enhanced responsiveness of cholesterol-enriched human platelets, we compared stimulation by surface-membrane-receptor (thrombin) and post-receptor (AlF4-) G-protein-directed pathways.
  • (17) Lysis of EAC4b,3b cellular intermediates formed to contain a low surface amount of C3b was more inhibited than was lysis of cells formed with a standard amount of C3b on the surface.
  • (18) After either 5 or 10 days of culture with both cytokines, intense immunofluorescent staining for Ia could be identified on the surface of greater than 80-90% of the viable islet cells.
  • (19) Within the capillary-perfused mucosa and muscularis (between 50 and 2000 microns from the urothelial surface), concentrations decreased by 50% for each 500-microns distance.
  • (20) Displacement of the surface of the cornea of bovine eyes after disruption of intact structures was investigated by means of holographic interferometry.